Signeddial of meter, center: GENERAL ELECTRIC/MADE IN U.S.A.
Inscribeddial of meter, top: D-C. KILOVOLTS
dial of meter, center: D-C./ MILLIAMPERES
dial of meter, bottom: TYPE DO-41/F.S.A. = .001/MODEL 8DO41A-Y511/NO. 3-K37/N.P. 97715
in blue grease pencil on glass of meter: 1 MA
in pencil on front of box: square case/Model 27/DC Microammeter/0-200 N/200 uamp
in pencil on top of box: rough geometric diagram
FunctionMeasures voltage and current in D.C. circuits.
ProvenanceFrom William James Hall, Harvard University.