Artifact Details

Title

Comptometer

Catalog Number

B503.88

Type

Physical object

Date

undated

Manufacturer

Felt and Tarrant Mfg Co.

Identifying Numbers

Other number 2021393 Patent number on top
Serial number K360135 Stamped in metal on top

Dimensions

overall: 5 3/4 in x 9 1/2 in x 12 3/4 in

Description

Comptometer consists of a brown case with 72 typewriter-like buttons. The rows of buttons are labeled from top to bottom "09", "18", "27", "36", "45", "54", "63", "72", "81". The first three columns are brown, the next three are green, and the last two are brown.There is a single red button on the upper right above the labeled buttons and a metal lever on the right side. Below the buttons, there is a row of eight indicator windows labeled 1 through 8 for each column.There is a two prong power port on the back. Four buttons have broken off and are contained in a separate bag.

Category

Calculator/mechanical

Collection Title

Gwen Bell artifact and book collection

Series Title

Pre-computing artifacts

Lot Number

B503.88