Adler AIS | Details

Details

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Object number

A-402
Classification

Drawing/Drafting
Object name

Protractor
Description

Half-circle, divided 0-180 both directions, radial arm with fine adjustment screw (of non-obvious use), bearing scale divided 30-0-30. Locking screw to set zero-position of radial arm. Glass window with crosshairs at center.
Inscription/Sig.

Calibrated Instrumetns/Inc./New York; 8" U. S.
Material

metal, glass
Place Of Prod.

United States

Dimensions

Frame