http://wiki.bidstonobservatory.org/api.php?action=feedcontributions&feedformat=atom&user=CritterCompiler 2026-06-03T19:46:52Z User contributions MediaWiki 1.35.3 http://wiki.bidstonobservatory.org/index.php?title=File:Chronometer_Room.png&diff=905 2022-04-17T16:58:58Z

<p>CritterCompiler: </p> <hr /> <div>== Summary ==<br /> Map Plan of the Chornometer Rating Room (from 1965 sketches)<br /> <br /> Chronometer room<br /> King’s self-registering Barograph [with clock] and duplicate Cylinder*<br /> Resistance coil and lamp stand for ditto*<br /> Molyneux Normal Mean Time Clock.* Galvanometer &amp; Cut out*<br /> Moreland Long Centre Seconds Clock<br /> 2 Chronometers James Pennington No 1021 and 1023 (Sold 1896 June 14)<br /> 1 Chronometer by Carl Ranch No 228 (Deposited. Ownership unknown)<br /> 1 Chronometer by Nidenham &amp; Adams No 1943 (Deposited. Ownership unknown)<br /> Source: http://www.inbeat.org/wp-content/uploads/2020/07/Part-2-Getting-the-right-time.pdf<br /> <br /> <br /> <br /> [[Category:Instruments]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Bidston%27s_Clock_Bond_regulator.png&diff=896 2022-04-17T16:54:23Z

<p>CritterCompiler: Bond regulator photographed in its display case at the Time Gallery, World Museum in Liverpool, ref. 1962.264.5. It is reported that the function of the clock at Bidston performed a service similar to that at Cambridge Observatory, ie. it was kept to accurate Greenwich time for the purpose of time distribution. It was placed into a room adjacent to the observing rooms and at some stage was fitted with electrical contacts for the same purpose. Reference: http://www.inbeat.org/wp-content/uploa...</p> <hr /> <div>== Summary ==<br /> Bond regulator photographed in its<br /> display case at the Time Gallery, World Museum<br /> in Liverpool, ref. 1962.264.5.<br /> <br /> It is reported that the function of the clock at Bidston performed a service similar to that at Cambridge Observatory, ie. it was kept to accurate Greenwich time for the purpose of time distribution. It was placed into a room adjacent to the observing rooms and at some stage was fitted with electrical contacts for the same purpose. Reference: http://www.inbeat.org/wp-content/uploads/2020/07/Part-2-Getting-the-right-time.pdf<br /> <br /> [[Category:Instruments]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Bidston_Observatory_Hotbox.png&diff=860 2022-04-17T16:09:00Z

<p>CritterCompiler: </p> <hr /> <div>== Summary ==<br /> The Bidston Observatory had a &quot;fine chronometer room&quot; thirty-six feet by twenty-one feet in which the two large hot boxes previously used at Waterloo Dock from 1861/2 were heated by gas from the cellar below. Each could hold one hundred chronometers which would be observed at temperatures between 50º to 85ºF throughout the year. The glazed lids of the boxes allowed observations to be made without requiring their removal. Temperatures would be changed weekly on a Saturday by 10º or<br /> 15ºF to show the change of rate to be expected when going from one climatic zone to another. This example is considerably smaller than the boxes installed at Bidston -- &quot;this must be the first hot air box used at Waterloo Dock<br /> from c. 1846 which had space for ‘but few at a time’&quot; --image from http://www.inbeat.org/wp-content/uploads/2020/07/Part-2-Getting-the-right-time.pdf<br /> <br /> [[Category:Instruments]]<br /> [[Category:Grey Literature]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Bidston_Observatory_Hotbox.png&diff=859 2022-04-17T16:07:58Z

<p>CritterCompiler: </p> <hr /> <div>== Summary ==<br /> The Bidston Observatory had a fine chronometer room thirty-six feet by twenty-one feet in which the two large hot boxes previously used at Waterloo Dock from 1861/2 were heated by gas from the cellar below. Each could hold one hundred chronometers which would be observed at temperatures between 50º to 85ºF throughout the year. The glazed lids of the boxes allowed observations to be made without requiring their removal. Temperatures would be changed weekly on a Saturday by 10º or<br /> 15ºF to show the change of rate to be expected when going from one climatic zone to another. This example is considerably smaller than the boxes installed at Bidston -- &quot;this must be the first hot air box used at Waterloo Dock<br /> from c. 1846 which had space for ‘but few at a time’&quot; --image from http://www.inbeat.org/wp-content/uploads/2020/07/Part-2-Getting-the-right-time.pdf<br /> <br /> [[Category:Instruments]]<br /> [[Category:Grey Literature]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Bidston_Observatory_Hotbox.png&diff=854 2022-04-17T16:05:57Z

<p>CritterCompiler: The Bidston Observatory had a fine chronometer room thirty-six feet by twenty-one feet in which the two large hot boxes previously used at Waterloo Dock from 1861/2 were heated by gas from the cellar below. Each could hold one hundred chronometers which would be observed at temperatures between 50º to 85ºF throughout the year. The glazed lids of the boxes allowed observations to be made without requiring their removal. Temperatures would be changed weekly on a Saturday by 10º or 15ºF to show...</p> <hr /> <div>== Summary ==<br /> The Bidston Observatory had a fine chronometer room thirty-six feet by twenty-one feet in which the two large hot boxes previously used at Waterloo Dock from 1861/2 were heated by gas from the cellar below. Each could hold one hundred chronometers which would be observed at temperatures between 50º to 85ºF throughout the year. The glazed lids of the boxes allowed observations to be made without requiring their removal. Temperatures would be changed weekly on a Saturday by 10º or<br /> 15ºF to show the change of rate to be expected when going from one climatic zone to another. This example is considerably smaller than the boxes installed at Bidston -- &quot;this must be the first hot air box used at Waterloo Dock<br /> from c. 1846 which had space for ‘but few at a time’&quot; --image from http://www.inbeat.org/wp-content/uploads/2020/07/Part-2-Getting-the-right-time.pdf</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Diary_of_Nautical_Almanac.png&diff=851 2022-04-17T15:56:36Z

<p>CritterCompiler: Diary of Nautical Almanac work Begun on 23rd November 1791, this diary is the main record of the efforts of Nevil Maskelyne, Astronomer Royal, to co-ordinate the production and publication of the Nautical Almanac. It reveals how he organised the work of the 'computers' and 'comparers', people recruited from across the country to conduct and check astronomical calculations on behalf of the Board of Longitude. Category:Instruments Category:Grey Literature</p> <hr /> <div>== Summary ==<br /> Diary of Nautical Almanac work <br /> <br /> Begun on 23rd November 1791, this diary is the main record of the efforts of Nevil Maskelyne, Astronomer Royal, to co-ordinate the production and publication of the Nautical Almanac. It reveals how he organised the work of the 'computers' and 'comparers', people recruited from across the country to conduct and check astronomical calculations on behalf of the Board of Longitude.<br /> <br /> [[Category:Instruments]]<br /> [[Category:Grey Literature]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Table_of_Geography_and_Hydrography,_Cyclopaedia.jpeg&diff=845 2022-04-17T15:45:24Z

<p>CritterCompiler: </p> <hr /> <div>== Summary ==<br /> Table of Geography and Hydrography Cyclopaedia<br /> <br /> For use with Sextant and Quadrant <br /> <br /> [[Category:Instruments]]<br /> [[Category:Grey Literature]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Table_of_Geography_and_Hydrography,_Cyclopaedia.jpeg&diff=843 2022-04-17T15:44:36Z

<p>CritterCompiler: Table of Geography and Hydrography Cyclopaedia Category:Instruments Category:Grey Literature</p> <hr /> <div>== Summary ==<br /> Table of Geography and Hydrography Cyclopaedia<br /> <br /> [[Category:Instruments]]<br /> [[Category:Grey Literature]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Stone_Time_Markings.jpeg&diff=841 2022-04-17T15:42:52Z

<p>CritterCompiler: Multiple Time Markings on Bidston Hill</p> <hr /> <div>== Summary ==<br /> Multiple Time Markings on Bidston Hill</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Computed_Table_of_moon_position.png&diff=838 2022-04-17T15:37:53Z

<p>CritterCompiler: </p> <hr /> <div>== Summary ==<br /> Table of moon’s position at midnight showing which stars to use for lunar distance predictions. Sent by Malachy Hitchins to Joshua Moore for midnight December 1798. (Courtesy of Library of Congress.)<br /> <br /> Government approved nautical almanac with tables of computed lunar distances. Early use of computational static tables for assigning a latitude and longitude to a world in process. Used with a sextant (from 19thC rated at Bidston), quadrant and navigational tables. Often used together with Chronometer and Dead Reckoning.<br /> <br /> [[Category:Instruments]]<br /> [[Category:Grey Literature]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Computed_Table_of_moon_position.png&diff=837 2022-04-17T15:36:35Z

<p>CritterCompiler: Table of moon’s position at midnight showing which stars to use for lunar distance predictions. Sent by Malachy Hitchins to Joshua Moore for midnight December 1798. (Courtesy of Library of Congress.) Government approved nautical almanac with tables of computed lunar distances. Early use of computational static tables for assigning a latitude and longitude to a world in process. Used with a sextant (from 19thC rated at Bidston), quadrant and navigational tables. Often used together with Chron...</p> <hr /> <div>== Summary ==<br /> Table of moon’s position at midnight showing which stars to use for lunar distance predictions. Sent by Malachy Hitchins to Joshua Moore for midnight December 1798. (Courtesy of Library of Congress.)<br /> <br /> Government approved nautical almanac with tables of computed lunar distances. Early use of computational static tables for assigning a latitude and longitude to a world in process. Used with a sextant (from 19thC rated at Bidston), quadrant and navigational tables. Often used together with Chronometer and Dead Reckoning.</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:NauticalAlmanac18thC.jpeg&diff=828 2022-04-17T15:17:38Z

<p>CritterCompiler: </p> <hr /> <div>== Summary ==<br /> Government approved nautical almanac with tables of computed lunar distances. Early use of computational static tables for assigning a latitude and longitude to a world in process. Used with a sextant (from 19thC rated at Bidston), quadrant and navigational tables. Often used together with Chronometer and Dead Reckoning. <br /> <br /> [[Category:Instruments]]<br /> [[Category:Grey Literature]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:NauticalAlmanac18thC.jpeg&diff=823 2022-04-17T15:15:23Z

<p>CritterCompiler: Government approved nautical almanac with tables of computed lunar distances. Early use of computational static tables for assigning a latitude and longitude to a world in process.</p> <hr /> <div>== Summary ==<br /> Government approved nautical almanac with tables of computed lunar distances. Early use of computational static tables for assigning a latitude and longitude to a world in process.</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=Category:Grey_Literature&diff=813 2022-04-17T14:59:20Z

<p>CritterCompiler: </p> <hr /> <div>[[Category: Archive]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=Category:Grey_Literature&diff=812 2022-04-17T14:58:37Z

<p>CritterCompiler: Created page with &quot;Category: Archives&quot;</p> <hr /> <div>[[Category: Archives]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Calibration_Certificate_Sextant.jpeg&diff=811 2022-04-17T14:58:10Z

<p>CritterCompiler: </p> <hr /> <div>== Summary ==<br /> Calibration certificate for a sextant, an instrument for measuring longitude via lunar distance and lunar theory<br /> <br /> [[Category:Instruments]]<br /> [[Category:Grey Literature]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Calibration_Certificate_Sextant.jpeg&diff=810 2022-04-17T14:57:27Z

<p>CritterCompiler: </p> <hr /> <div>== Summary ==<br /> Calibration certificate for a sextant, an instrument for measuring longitude via lunar distance and lunar theory<br /> <br /> [[Category:Instruments, Grey Literature]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=We_are_here&diff=807 2022-04-17T14:54:44Z

<p>CritterCompiler: Created page with &quot;File:Properties of n+m-dimensional spacetimes.png Category: Contributions&quot;</p> <hr /> <div>[[File:Properties of n+m-dimensional spacetimes.png]]<br /> <br /> [[Category: Contributions]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=Diamond_Liberation_Front&diff=804 2022-04-17T14:53:19Z

<p>CritterCompiler: </p> <hr /> <div>The Diamond Liberation Front is an organisation of latent temporalities and unsafe spatialities, organized in the untold cross between crystals and the stars.<br /> <br /> <br /> [[File:Harrisson H4 Diamond Pallets.jpeg]]<br /> <br /> Diamond endstones were said to give the chronometers the precision and longevity needed to keep time. The diamond's in the 18th century chronometers most likely produced through colonial extraction in Brazil reliant on slave labor. By the 19th century the diamond's most likely extracted from the Big Hole in Kimberley South Africa, an underground open mine dug by hand by 10,000 workers who dug the Big Hole and laboured to extract diamonds from the volcanic rock. <br /> <br /> [[Category:Contributions]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=Diamond_Liberation_Front&diff=802 2022-04-17T14:52:55Z

<p>CritterCompiler: </p> <hr /> <div>The Diamond Liberation Front is an organisation of latent temporalities and unsafe spatialities, organized in the untold cross between crystals and the stars.<br /> <br /> [[File:Properties of n+m-dimensional spacetimes.png]]<br /> <br /> [[File:Harrisson H4 Diamond Pallets.jpeg]]<br /> <br /> Diamond endstones were said to give the chronometers the precision and longevity needed to keep time. The diamond's in the 18th century chronometers most likely produced through colonial extraction in Brazil reliant on slave labor. By the 19th century the diamond's most likely extracted from the Big Hole in Kimberley South Africa, an underground open mine dug by hand by 10,000 workers who dug the Big Hole and laboured to extract diamonds from the volcanic rock. <br /> <br /> [[Category:Contributions]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Properties_of_n%2Bm-dimensional_spacetimes.png&diff=800 2022-04-17T14:50:37Z

<p>CritterCompiler: We are here: Properties of n+m-dimensional spacetimes Category:Instruments</p> <hr /> <div>== Summary ==<br /> We are here: Properties of n+m-dimensional spacetimes<br /> <br /> [[Category:Instruments]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Latitude_and_longitude_graticule_on_a_sphere.svg_.png&diff=795 2022-04-17T14:28:04Z

<p>CritterCompiler: CritterCompiler moved page File:Latitude and longitude graticule on a sphere.svg .png to File:Transparentearth.png</p> <hr /> <div>#REDIRECT [[File:Transparentearth.png]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Transparentearth.png&diff=794 2022-04-17T14:28:04Z

<p>CritterCompiler: CritterCompiler moved page File:Latitude and longitude graticule on a sphere.svg .png to File:Transparentearth.png</p> <hr /> <div>== Summary ==<br /> transparent earth of 18th century<br /> <br /> [[Category:Instruments]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Quandrant.jpeg&diff=777 2022-04-17T12:58:02Z

<p>CritterCompiler: </p> <hr /> <div>== Summary ==<br /> The quadrant was a simple antecedent to the sextant. The quarter-circle scale allowed direct readings of the altitude of stars above the horizon to help determine latitude.<br /> [[Category:Instruments]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Quandrant.jpeg&diff=776 2022-04-17T12:57:45Z

<p>CritterCompiler: The quadrant was a simple antecedent to the sextant. The quarter-circle scale allowed direct readings of the altitude of stars above the horizon to help determine latitude.</p> <hr /> <div>== Summary ==<br /> The quadrant was a simple antecedent to the sextant. The quarter-circle scale allowed direct readings of the altitude of stars above the horizon to help determine latitude.</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Harrison-h4-diagram.jpeg&diff=774 2022-04-17T12:54:04Z

<p>CritterCompiler: Diagram of a Harrison H4 Chronometer rated at Bidston Category:Instruments</p> <hr /> <div>== Summary ==<br /> Diagram of a Harrison H4 Chronometer rated at Bidston<br /> <br /> [[Category:Instruments]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Sextant_Tested_Bidston.jpeg&diff=769 2022-04-17T12:51:53Z

<p>CritterCompiler: According to the label on the inner cover of the fitted felt lined wooden box, &quot;This sextant No. 5976 of 6-1/2” radius, divided on Silver and reading to 10” was examined by the Liverpool Observatory, Bidston, Birkenhead on March 2, 1917 and found that the telescopes, shades, mirrors and arc are found “very good” and the instrument is approved for determination of Lunar distances, latitudes etc. with no appreciable error.&quot; Enclosed within the box with the sextant is a scope and two eyepieces....</p> <hr /> <div>== Summary ==<br /> According to the label on the inner cover of the fitted felt lined wooden box, &quot;This sextant No. 5976 of 6-1/2” radius, divided on Silver and reading to 10” was examined by the Liverpool Observatory, Bidston, Birkenhead on March 2, 1917 and found that the telescopes, shades, mirrors and arc are found “very good” and the instrument is approved for determination of Lunar distances, latitudes etc. with no appreciable error.&quot; Enclosed within the box with the sextant is a scope and two eyepieces. The box is 5-1/2 x 9-1/2 z 10” with brass handle and clasps, with functioning lock and key.<br /> <br /> [[Category:Instruments]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Chronometers_Hotbox.png&diff=763 2022-04-17T12:49:37Z

<p>CritterCompiler: This photo from the World Museum in Liverpool’s records shows the small hot box with its lid open. The grid at the base allowed heat to circulate. The chronometers appear to have been arranged for the photograph, but an impression of the accommodation available is evident. The thermometer shown is by Liverpool optician and instrument maker Richard Adie; it was probably not used in this box as it had a vertical stand making it too tall and difficult to view when the box lid was closed - &quot;AHS&quot;...</p> <hr /> <div>== Summary ==<br /> This photo from the World Museum in<br /> Liverpool’s records shows the small hot box with<br /> its lid open. The grid at the base allowed heat to<br /> circulate. The chronometers appear to have been<br /> arranged for the photograph, but an impression<br /> of the accommodation available is evident. The<br /> thermometer shown is by Liverpool optician and<br /> instrument maker Richard Adie; it was probably<br /> not used in this box as it had a vertical stand<br /> making it too tall and difficult to view when the<br /> box lid was closed - &quot;AHS&quot; http://www.inbeat.org/wp-content/uploads/2020/07/Part-2-Getting-the-right-time.pdf<br /> <br /> [[Category:Instruments]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Chronometer_Room.png&diff=757 2022-04-17T12:46:12Z

<p>CritterCompiler: Map Plan of the Chornometer Rating Room (from 1965 sketches) Category:Instruments</p> <hr /> <div>== Summary ==<br /> Map Plan of the Chornometer Rating Room (from 1965 sketches)<br /> <br /> <br /> [[Category:Instruments]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Chronometer_Caveat.png&diff=752 2022-04-17T12:44:12Z

<p>CritterCompiler: Note with the occupations of stars observed at Liverpool Observatory, Bidston, Birkenhead, during the total Eclipse of the Moon, 1888, January 28 Category:Instruments</p> <hr /> <div>== Summary ==<br /> Note with the occupations of stars observed at Liverpool Observatory, Bidston, Birkenhead, during the total Eclipse of the Moon, 1888, January 28 <br /> <br /> [[Category:Instruments]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Amillary_Sphere.png&diff=734 2022-04-17T12:31:28Z

<p>CritterCompiler: Amillary Sphere used with sextant and quadrant for celestial longitude (also see transparent earth Category:Instruments</p> <hr /> <div>== Summary ==<br /> Amillary Sphere used with sextant and quadrant for celestial longitude (also see transparent earth<br /> <br /> [[Category:Instruments]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Transparentearth.png&diff=720 2022-04-17T12:18:03Z

<p>CritterCompiler: </p> <hr /> <div>== Summary ==<br /> transparent earth of 18th century<br /> <br /> [[Category:Instruments]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Transparentearth.png&diff=719 2022-04-17T12:16:59Z

<p>CritterCompiler: transparent earth of 18th century</p> <hr /> <div>== Summary ==<br /> transparent earth of 18th century</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Calibration_Certificate_Sextant.jpeg&diff=704 2022-04-17T12:03:40Z

<p>CritterCompiler: </p> <hr /> <div>== Summary ==<br /> Calibration certificate for a sextant, an instrument for measuring longitude via lunar distance and lunar theory<br /> <br /> [[Category:Instruments]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Harrisson_H4_Diamond_Pallets.jpeg&diff=698 2022-04-17T12:02:05Z

<p>CritterCompiler: </p> <hr /> <div>== Summary ==<br /> Diamond endstones were said to give the chronometers the precision and longevity needed to keep time. The diamond's in the 18th century chronometers most likely produced through colonial extraction in Brazil reliant on slave labor. By the 19th century the diamond's most likely extracted from the Big Hole in Kimberley South Africa, an underground open mine dug by hand by 10,000 workers who dug the Big Hole and laboured to extract diamonds from the volcanic rock.<br /> <br /> [[Category:Instruments]]</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Harrisson_H4_Diamond_Pallets.jpeg&diff=694 2022-04-17T11:57:39Z

<p>CritterCompiler: </p> <hr /> <div>== Summary ==<br /> Diamond endstones were said to give the chronometers the precision and longevity needed to keep time. The diamond's in the 18th century chronometers most likely produced through colonial extraction in Brazil reliant on slave labor. By the 19th century the diamond's most likely extracted from the Big Hole in Kimberley South Africa, an underground open mine dug by hand by 10,000 Black workers who dug the Big Hole and laboured to extract diamonds from the volcanic rock.</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Harrisson_H4_Diamond_Pallets.jpeg&diff=680 2022-04-17T11:54:03Z

<p>CritterCompiler: </p> <hr /> <div>== Summary ==<br /> Diamond endstones were said to give the chronometers the precision and longevity needed to keep time. The diamond's in the 18th century chronometers most likely produced through colonial extraction in Brazil reliant on slave labor. By the 19th century the diamond's most likely were procured from South Africa.</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Harrisson_H4_Diamond_Pallets.jpeg&diff=657 2022-04-17T11:42:20Z

<p>CritterCompiler: Diamond endstones were said to give the chronometers the precision and longevity needed to keep time</p> <hr /> <div>== Summary ==<br /> Diamond endstones were said to give the chronometers the precision and longevity needed to keep time</div>

CritterCompiler http://wiki.bidstonobservatory.org/index.php?title=File:Calibration_Certificate_Sextant.jpeg&diff=619 2022-04-17T10:24:54Z

<p>CritterCompiler: Calibration certificate for a sextant, an instrument for measuring longitude via lunar distance and lunar theory</p> <hr /> <div>== Summary ==<br /> Calibration certificate for a sextant, an instrument for measuring longitude via lunar distance and lunar theory</div>

CritterCompiler