-40%
Antique Steam Engine ~ Frahm Vibration Tachometer ~ Biddle Philadelphia 8" Brass
$ 66
- Description
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Description
Antique Steam Engine~
Frahm Vibration Tachometer ~ Biddle Philadelphia 8" Brass
Antique Steam Engine Vibrating Reed Tachometer
Frahm System Model 11542
1500-2100 REVOLUTIONS Per Minute RPM Gauge
In glass faced brass casing - 8" Diameter at face - 4.5" Deep
Made by James G. Biddle, Philadelphia U.S.A.
In fair antique condition - staining to face - small dents to brass case - reeds vibrarte nicely - accuracy unknown