POCKET SURVEYOR'S SQUARE
MACKENZIE & SWYGART, CIRCA 1820
signed on upper folding arm Mackenzie & Swygart 15 Cheapside London, the lower limb with notch at perpendicular and engraved line 45. Deg., in original lined fishskin case
6in. (15cm.) long
POCKET SURVEYOR'S SQUARE
MACKENZIE & SWYGART, CIRCA 1820
signed on upper folding arm Mackenzie & Swygart 15 Cheapside London, the lower limb with notch at perpendicular and engraved line 45. Deg., in original lined fishskin case
6in. (15cm.) long
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