One of these is in the Smithsonian labeled a “dosage meter.” It probably is part of a medical fake.
kilowatt hour scale and ammeter scale
0.5-5 Amperes AC
Pattern No. 11
Serial No. 833837
3-15 Volts AC
Pattern No. 11
0-130 Volts AC, 25-125 cycles/sec
Model 155
0-3 Amperes AC
Model No. 155
Analog Voltmeter 0-150 Volts DC
Cat.No. 3064 G
Analog Ammeter 0-30 Amperes DC
model 280
0-10 Amperes DC
Model 280
0-100 Millivolts DC
Model 1
0- 500 Amperes DC
Model No. 1
