
Model 237Cn portable ammeter

Description
No. 237C. Direct Current, Type 2.W.Resistance .000041
OHMS 23.5 C
Pat. Mar 24th 1891
1907-03-25
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Queen and Co.
Maker
No. 237C. Direct Current, Type 2.W.Resistance .000041
OHMS 23.5 C
Pat. Mar 24th 1891
1907-03-25
Maker