Dim. ( W-D-H ) 195 mm x 235 mm x 115 mm / 7_3/4" x 9_1/4" x 4_1/2" PRECISION DC MILLI-VOLT METER SIEMENS & HALSKE / Germany (1930) ******************************************************************** SN = 4880 CLASS 0.2 45 Milli-Volt ( Ri = 10 Ω ) / 3 Volt ( Ri = 1 kΩ ) Upper Scale = 0..150 ( x0.3 black ) ; Lower Scale = 0..3 ( red ) Housing is made of bakelite - Original state: No seal was broken! R E M A R K : U [Volt] = R [Ohm] * I [Ampere] ==================================================================== Because OHM's LAW, this instrument is also a PRECISION mA-Meter ... 45 mV = 10 Ω * 4.5 mA ; 3 V = 1 kΩ * 3 mA ======== ====== Have a Look at an AEG Version ... impressum: ******************************************************************** © C.HAMANN http://public.BHT-Berlin.de/hamann 11/16/13 |