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

Zero Stock-Antique Barometer Compass and Thermometer Compendium

Scientific Collectables for antique and vintage collectable compasses

A WWI Leather Cased Barkers Patent Military Handheld Prismatic

Very Rare Transparent Pocket Compass by Francis Barker C1910

VICTORIAN SINGERS PATENT COMPASS BY FRANCIS BARKER c1880 – Sold

Very Rare Transparent Pocket Compass by Francis Barker C1910

Antique Pocket Singer's Patent Compass by Francis Barker C1870

Scientific Collectables for antique and vintage collectable compasses

Antique Pocket Singer's Patent Compass by Francis Barker C1870

Vintage general-purpose compass - price guide and values

COMPASSES – Explorer Antiques

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Zero Stock-Antique Barometer Compass and Thermometer Compendium

Scientific Collectables for antique and vintage collectable compasses