Zero Stock - Antique Prismatic Compass with Clinometer Barkers Patent – Explorer Antiques

ZERO STOCK-Antique Compass Made by Stockert Germany – Explorer

A WWI Leather Cased Barkers Patent Military Handheld Prismatic

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Zero Stock-Antique Barometer Compass and Thermometer Compendium

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ZERO STOCK-Antique Geological Compass Clinometer – Explorer Antiques

Zero Stock - Antique Prismatic Compass with Clinometer Barkers

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Antique Francis Barker Pebble Lens Pocket Compass c.1890