Title

Time Recording Clock

Creation Date

1970

Accessory

Instructional book

Maker's Mark

Calculagraph Co.

Description

A calculagraph produced by the Calculagraph Co. and sold by the Northern Business Controls Co. The calculagraph is a time keeping device much similar to a time clock with the added feature that it calculates the amount of time that has passed between two points. Earlier models were mostly mechanically powered, but this specific model is electric and would've been used in industrial settings and carparks to calculate parking and rental rates. This model calculates at a rate of $2 per hour and comes with a instructional booklet.