UKA9 Nr.241118 Multimeter Black
Bakelite 3300
mirror scale in felt lined leatherette covered wood box. AC/DC ten
ranges 3/12/60/300/600V and .012/.06/.3/1.2/6A As can be seen I have
had to replace some of the resistors as the wire wound originals had
gone open circuit, the rectifier was also replaced with a copper oxide
one from a scrap meter. The toggle switch was making intermittent
contact but now works well after cleaning and reassembling. The meter
works on all ranges and is reasonably accurate.
Made by Theodor Horn of
Leipzig Germany 1943? This meter aquired by my father was given to me
back in the 1950s. I don't know for sure but I imagine it came from the
same souce as the E52b communications receiver also on this site.
I have traced out the circuit diagram:
This is the trade mark which is on the
scale plate. I am indebted to Henk van der Meij for identifying the
manufacturer
In June 2014 I received
these pictures of an ohmmeter which has many similar constructional
similarities but it would seem from a different manufacturer as the
works in Leipzig was demolished in 1945. Production resumed after the
war firstly
for the Americans and then the Russians. for details see :
http://www.radiomuseum.org/dsp_hersteller_detail.cfm?company_id=14902.
A
pencilled date indicates that it may have been made (or calibrated) in
1947.
