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Dial gauge for comparator use

1939-1946
Wickman dial gauge for comparator use, made by Venner Time Switches, with adjustable upper and lower acceptable tolerance indication; 1939-1946.

Wickman dial gauge for comparator use

1939-1946
4 Dial gauge for comparator use, made by Compar, with adjustable upper and lower acceptable tolerance indication; 1939-1946.

4 Dial gauge for comparator use

1939-1946