Artifact Details

Title

Thacher's calculating instrument

Catalog Number

B56.80

Type

Physical object

Description

Instruction manual located in Object File. The drum of the instrument is in good condition. However, the "arm" of the piece has been shattered and the lens is now loose. Both the lens and the shards of the arms are contained in separate envelopes within the instrument's case.

Date

ca. 1903

Manufacturer

Keuffel & Esser Company

Place Manufactured

N.Y., U.S.

Identifying Numbers

Other number 40135870 on base

Dimensions

6 3/4 x 24 1/2 x 7 in.

Category

Pre-computer/slide rule

Collection Title

Gwen Bell artifact and book collection

Series Title

Pre-computing artifacts

Lot Number

B56.80