Name:

Calculagraph

Description:

Apparatus for measuring the duration of a telephone call. Usually used in long distance calls where the green lever was to start the count and the red one to stop it.

Color:

Black and nickel-plated

Manufacturer:

Made by Calculagraph Co. Hanson, N.J. USA

Year:

1960

Weight:

6.30 kg

Dimensions:

Length: 25cm, Height: 15, Width: 25cm