dc milliammeter
Inventory Number2012-1-0038
ClassificationMeter
Subject
Maker
Rawson Electrical Instrument Company
1918 - 1968
Cultural Region
Place of Origin
Place of Use
Dimensions11 × 20.5 × 18.8 cm (4 5/16 × 8 1/16 × 7 3/8 in.)
Material
DescriptionSquare walnut case with flat leather handle and hinged lid.
Inside is the instrument, with a bakelite casing. Fan-shaped window at top of the panel, with the Rawson standard pointer (with a double, o-shaped section over the mirror) with a reflective band under the scale.
Single scale, from 0-200 milliamperes.
Under the scale at lower left are two black capped binding posts top one labeled “+”. Raised disk-shaped section with the "ZERO" and "CLAMP" dials, arrow on “CLAMP “ dial.
Inside is the instrument, with a bakelite casing. Fan-shaped window at top of the panel, with the Rawson standard pointer (with a double, o-shaped section over the mirror) with a reflective band under the scale.
Single scale, from 0-200 milliamperes.
Under the scale at lower left are two black capped binding posts top one labeled “+”. Raised disk-shaped section with the "ZERO" and "CLAMP" dials, arrow on “CLAMP “ dial.
Signedprinted on face of meter: MILLIAMPERES / RAWSON ELECTRICAL INSTRUMENT CO. / CAMBRIDGE, MASS. / NO. 2094 / TYPE 501
FunctionAn ammeter is a measuring instrument used to measure the electric current in a circuit.
Rawson Electrical Instrument Company
Date: 1960s
Accessories: the probe 2012-1-0036 plugs to this instrument
Object number: 2012-1-0035
