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Inventory no. 41742 - Former Display Label

English GUNNER'S CALLIPERS and SECTOR
c.1770

Brass. Signed, "Watkins & Smith London"; undated.

At the joint is a circular scale of inches which shows the distance between the points of the callipers.

On one arm is engraved a table of "Cubic feet of Metals etc. in pounds & Decimals. Averdu{yogh} & Inches of {e above y} Same in Ounces & Decimals". Other tables and scales are marked "Shot", "Brass Guns proof Service", "Iron Guns ...", etc.

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