Manufacture: Yokogawa Product Description: Model 2707 is a compact transistorized electronic galvanometer using a battery. With sensitivity of 10 microV/div., this instrument is highly suited to field measurements and as an indicator for complex measuring instruments.
10microV div. Sensitivity
Stable measurement Zero drift as low as 1microV/h or 1microV/20 degrees C
300 hours battery life
Overload protection circuit
Specifications:
Measuring Range +-250microV+20-10
Voltage Sensitivity 10microV/div. +-10%
Maximum Sensitivity 10microV/div. +-10%
Response Time Approx. 3 seconds
Common Mode Rejection More then 140 dB at DC and commercial frequencies (50 and 60 Hz)
Normal Mode Rejection More then 60 dB
Vibration of Pointer Unrecognizable
Drift Less then +-1microV/10 Minutes or +-2microV/20 degrees C
Max. Allowable Input 5V
Insulation Resistance Approx. 9k Ohms
Power Source One 9V Battery (JIS 6F22 or Equivalent)
Life of Battery Approx. 300 hours when continuously used
Dimensions 113 x 106 x 46 mm 4 1/2 x 4 1/4 x 1 7/8 in
 "270710 Portable Electric Galvanometer")