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Title: Surveyor's compass made by Gregg & Rupp, New York, 1767-1793

Accession Number: 1967.89
Category: INSTRUMENTS - COMPASSES
Type: vernier compass
Maker: Gregg & Rupp
Place: USA, NY, New York
Date: 1767 - 1793
Materials:
Description: Vernier compass, dating from the late 18th century, used in topographical land surveys. Instrument is brass with silver dial. Level on either side of dial at right angles to each other. Dial marked "Gregg & Rupp, New York" In box 15 1/2" x 7 1/2". This instrument takes its name from Pierre Vernier (1580-1637), a French mathematician and inventor, who developed fractional scale settings for instruments.

Mystic Seaport Image ID m182365    Information regarding reproductions