Comptometer

Object/Artifact

Museum Of American Heritage

Name/Title

Comptometer

Entry/Object ID

2025.65.10

Description

Comptometer

Made/Created

Manufacturer

Felt & Tarrant Mfg. Co.

Date made

1887 - 1939

Notes

Model number unknown but similar to Models A-J

Lexicon

Nomenclature 4.0

Nomenclature Tertiary Object Term

Machine, Adding

Nomenclature Secondary Object Term

Machine, Calculating

Nomenclature Primary Object Term

Processor, Analog Data

Nomenclature Sub-Class

Data Processing Devices

Nomenclature Class

Data Processing T&E

Nomenclature Category

Category 06: Tools & Equipment for Communication

Material

Metal

Color

Brown

Web Links and URLs

Vintage Calculator Museum

General Notes

Note

Model number not found but similar to Models A-J

Note

The comptometer was the first commercially successful key-driven mechanical calculator, patented in the United States by Dorr Felt in 1887. Key arrangement is 2-3-3 (2columns in white, then 3 columns in brown, and then 3 columns in white), so is not intended for dollars and cents which would have had 2 columns on the far right.