Simpson 260® Series 4M
Analog - VOM
Volt-Ohm-Milliammeter
The Simpson 260 Series 4M takes the banana jack type test leads.
No Taut Band Suspension, but does have the mirrored dial. The Series 4 continued with the self shielding
meter movement with the spring loaded jewels that was introduced on the Series 3A.
Controls include: Ohms zero adjustment, AC - DC - Output, a 12 position Function / Range
selector switch, and eight recessed probe jacks.
The back of the case has an "adapter lock" for use with add-on accessories such as the 625 temperature adaptor.
The inside view shows the improved printed circuit board, now with a calibration circuit.
The batteries can be installed without taking the whole unit apart, only the back of the case needs to be removed.
More inside views linked below.
The batteries used in this model are a single "D" cell, plus four "AA" batteries, there are two "AA"
below the "D" and one "AA" on each side.
Case Size: 5¼ " x 7 " x 3⅛ " - Weight: 3 Pounds
Simpson
260 Series 4M SpecificationsDC VOLTAGE
Ranges 2.5V, 10V, 50V, 250V, 1000V
Accuracy 2% of full scale * Sensitivity 20K ohms per volt
AC VOLTAGE
Ranges 2.5V, 10V, 50V, 250V, 1000V
Accuracy 3% of full scale * Sensitivity 5K ohms per volt
Rated Circuit-To-Ground Voltage Unknown
DECIBEL
4 Ranges +10, +22, +36, +50dB
DC CURRENT
Ranges 50μA, 10mA, l00mA, 500mA
Accuracy 3% of full scale
RESISTANCE
Ranges Rx 1, Rx 100, Rx 10K
Accuracy 3° of arc
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