Z E R O - C E N T E R   MILLI-AMP-METER   W E S T O N    Model 269
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WESTON ELECTRIC INSTRUMENT CO., Newark, NewJersey / USA     (1930)

   +/- 25 mA   ( Uo = 150 mV ;  Ri = 6 Ω )   5_1/2" x 4_1/2"

Mounted  in a  CIGAR  BOX   7" x 6" x 2"  (= 18cm x 15cm x 5.5cm )

With a  SHUNT = 2.6 Ω  the instrument is calibrated to  +/- 100 mA
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            A SIEMENS Zero-Center mA Meter and its APPLICATION ...
                       Back to the WESTON Telegraphy Test Unit ...
impressum:
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© C.HAMANN      http://public.BHT-Berlin.de/hamann        06/31/14