DC Ampère hour meter
Very old DC Ampère Hour meter from early 1900's.
5000 revs = 1 Amp hour.
The actual Aluminium disc has a commutator and three flat wire coils within.
Manufacturer unknown.
5000 revs = 1 Amp hour.
The actual Aluminium disc has a commutator and three flat wire coils within.
Manufacturer unknown.
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Tech