MILLI-AMP / -VOLT-METER » MAVOMETER « GOSSEN / Germany (1930) ******************************************************************* Dimension ( W-D-H ) 85 mm x 125 mm x 40 mm / 3_3/8" x 5" x 1_5/8" Class 1 ; 2 mA / 100 mV ( Ri = 50 Ω ) w/o Shunt / Ser.Resist. R E M A R K S: SN = 47170 ------------------------------------------------------------------- The rubber feet had to be remade out of an old leather belt. The »MAVOMETER« came in a cardboard case. Originally the instrument get connected by pushing the WHITE BUTTON (w. Pre-TEST-Feature ). For CONTINUOUS MEASUREMENTS I have blocked it inside by a wedge. EXPERIMENT: SHUNT = 32 Ω ==>> 5 mA Range ( on "50" Scale ) SER.R. = 3.75 kΩ ==>> 7.5 V Range ( on "75" Scale ) This f a m o u s bakelite precision instrument was a forerunner of Multi-Meters: A set of SHUNTS & SER.RES. was available ... ... like this in a BOX (BUT NOT IN OUR MUSEUM !) impressum: ******************************************************************* © C.HAMANN http://public.BHT-Berlin.de/hamann 11/12/13 |