multi-wattmeter
Inventory Number2012-1-0043
ClassificationWattmeter
Subject
Maker
Rawson Electrical Instrument Company
1918 - 1968
Cultural Region
Place of Origin
Place of Use
Dimensions15.4 × 24.1 × 23.3 cm (6 1/16 × 9 1/2 × 9 3/16 in.)
Material
DescriptionSquare walnut case with flat leather handle and hinged lid.
Inside is the instrument, with a bakelite casing. Fan-shaped window at bottom of the panel, with the Rawson standard pointer (with a double, o-shaped section over the mirror) with a reflective band under the scale.
Triple scale, top scale non-linear , 0-10 watts, middle non-linear scale written in 0-50 watts, bottom linear scale 0-200/1000 watts.
Above the scale are two black capped binding posts labeled “SUPPLY CIRCUIT MAX 250 VOLTS” on left
are two black capped binding posts labeled “LOAD CIRCUIT SEE INSTRUCTIONS”. At center is raised disc with "CLAMP" dial and “ZERO” dial, arrow on “CLAMP “ dial and labeled above dials “UNCLAMP BEFORE USING”.
On lower right above scale is knob labeled “WATTS”, labeled “10”, “
Inside is the instrument, with a bakelite casing. Fan-shaped window at bottom of the panel, with the Rawson standard pointer (with a double, o-shaped section over the mirror) with a reflective band under the scale.
Triple scale, top scale non-linear , 0-10 watts, middle non-linear scale written in 0-50 watts, bottom linear scale 0-200/1000 watts.
Above the scale are two black capped binding posts labeled “SUPPLY CIRCUIT MAX 250 VOLTS” on left
are two black capped binding posts labeled “LOAD CIRCUIT SEE INSTRUCTIONS”. At center is raised disc with "CLAMP" dial and “ZERO” dial, arrow on “CLAMP “ dial and labeled above dials “UNCLAMP BEFORE USING”.
On lower right above scale is knob labeled “WATTS”, labeled “10”, “
Signedprinted on face of meter: TYPE 516E / RAWSON ELECTRICAL INSTRUMENT CO., INC. / No. 10,000 CAMBRIDGE, MASS. / MULTI-WATTMETER
FunctionThe wattmeter is an instrument for measuring the electric power (or the supply rate of electrical energy) in watts of any given circuit.
Radio Corporation of America
Date: circa 1921
Object number: RS0723
