Simpson 270 Series 3
Analog - VOM
The Simpson 270 Series 3 comes standard with the mirrored dial.
The inside of this unit is date stamped November 19, 1970
The Simpson 270-3 has the Taut Band Suspension and a mirrored dial to eliminate parallax errors.
The "M" designation is not used in the series number.
Controls include: Ohms zero adjustment, AC - DC Voltage selector switch,
and a 12 position Function / Range selector switch.
The back of the case has an "adapter lock" for use with "Add-A-Tester" accessories.
The rear case now has raised bumps at the four corners, rubber feet were on the next series.
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
The Adjust-A-View handle can also support the meter in a sloping position for viewing.
Simpson 270-3 Specifications
Ranges 250mV, 2.5V, 10V, 50V, 250V, 1000V, 5000V
Accuracy: 1.25% of full scale @ 77°F, 1.75% of full scale @ 67-87°F
Accuracy: 2.25% of full scale @ 77°F, 2.75% of full scale @ 67-87°F For 5000 V Scale
Ranges 2.5V, 10V, 50V, 250V, 1000V
2% of full scale @ 77°F, 3% of full scale @ 67-87°F
Rated Circuit-To-Ground Voltage 1000V (AC or DC) max.
5 Ranges -20 to +50dB * Reference 0dB= 1mW into 600Ω
Ranges 50μA, 1mA, 10mA, l00mA, 500mA, 10A
Accuracy 0.75% of full scale on 50μA @77°F, 1.25% full scale of all others @77°F,
1.25% of full scale on 50μA @ 67-87°F, 1.75% of full scale of all others @ 67-87°F
Ranges R x 1, R x 100, R x 10K
Accuracy 1.5° of arc on R x 1, 1.0° of arc on R x 100, R x 10K
Maximum Indication 0-2KΩ, 0-200Ω, 0-20MΩ
Audio Frequency Output
With 0.1μf internal series capacitor
Ranges 2.5V, 10V, 50V, 250V
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