Title
Sector
Catalog Number
B338.85
Type
Physical object
Description
"T Heath fecit" engraved into one arm near hinge. lower arm is a plain piece of brass that fits into the upper arm when it is closed.
Date
ca. 1740
Manufacturer
Heath, T.
Place Manufactured
England
Dimensions
1 1/2 x 6 1/4 x 1/4 in.
Category
Pre-computer/sector
Subject
Proportional compass; Hand calculation; Military applications; Analog
Collection Title
Gwen Bell artifact and book collection
Series Title
Pre-computing artifacts
Credit
Gift of Gwen and C. Gordon Bell