A very rare mahogany cased brass pocket equinoctial compass by Francis Barker for Negretti & Zambra London c1870

Equinoctial Compass by Barker for Negretti & Zambra c1870 - SOLD


Image of open Francis Barker Equinoctial Compass Retailed by Negretti & Zambra c1870 with gnomon raised taken from aboveEquinoctial compass having 1″ diameter compass with white card dial, the azimuth circle with 90 degree quadrants, cardinals, intercardinals and secondary intercardinals. Blued steel spear tip pointer, locking bar engaged from pin on closure, flat glass.

Side-mounted arc of latitude, compass top having inset brass chapter ring with hours running from 4am across noon to 8pm, signed by the retailer “Negretti & Zambra, London,” folding gnomon. Twin swinging closure catches.

In crisp original condition, the mahogany case with good colour and retaining almost all its original lacquered finish. The brass furniture patinated with traces of original finish. The compass card with minor age marks, the needle generally with light surface corrosion.

Hinges, catches, transit lock and folding gnomon all sound and operating as they should. The compass, when level, finds north easily. Minor marks and indentations to exterior.

This is definitely a first: though equinoctial compasses in many patterns do occur from time to time, this is the first of this particular ‘pocket’ pattern that we have encountered. It is most definitely a serious attempt to produce a practical yet very small mobile instrument.

Image of Francis Barker Equinoctial Compass taken from Barker Catalogue 1907Francis Barker was the pre-eminent maker of compasses and sundials of his time, and a later iteration of this compass is included in the Francis Barker Complete Catalogue of 1907.

This fine equinoctial compass is very much a collector’s item.

Dimensions: 2⅛” wide x 2⅛” deep x ¾” high

Stock No: SI1223

Price: SOLD

Close up of dial of Francis Barker Equinoctial Compass Retailed by Negretti & Zambra c1870
Image of closed Francis Barker Equinoctial Compass Retailed by Negretti & Zambra c1870 taken from above
Image of underside of Francis Barker Equinoctial Compass Retailed by Negretti & Zambra c1870
Image of closed Francis Barker Equinoctial Compass Retailed by Negretti & Zambra c1870 showing close up of arc of latitude
Image of closed Francis Barker Equinoctial Compass Retailed by Negretti & Zambra c1870 with gnomon raised
Image of open Francis Barker Equinoctial Compass Retailed by Negretti & Zambra c1870 with gnomon raised taken from righthandside
Image of Francis Barker Equinoctial Compass Retailed by Negretti & Zambra c1870 showing open compass from lefthandside
Image of open Francis Barker Equinoctial Compass Retailed by Negretti & Zambra c1870 with gnomon raised taken from above





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