Serial number 60115291
Digital battery powered Circuitmate DM20 made by Beckman Industrial Corp [a subsidiary of Emerson Electric Co. Made in Taiwan. The multimeter has a clear digital readout on a LCD screen. It will measure AC and DC voltage and current as well as resistance and conductance. Function and range adjustment is accomplished via a single switch. The instrument is powered by a 9 Volt PP3 size battery.
This was given to me by Barry Carter who said he was fed up
with it falling out of a cupboard whenever he went to look for
something! I use this meter frequently and it works well.