Wow! classy, bakelite casing and it works….Master Instruments Pty LtdMade in AUSTRALIA – when we used to have a thriving electronic components industryModel: S212Voltage meter 50-0-50 DCCentre Zero restCOSMETIC CONDITION:Wonderful condition, no cracks or chips to the casingMeter front is without scratches or cracksScale behind the glass is very lightly marked – I don’t want to try and open the case so I have not attempted to clean the scaleTESTING:Although removed from working equipment, tested before advertising – works a treat with nice smooth movement and rock solid centre zero rest. No sticking and the readings were accurate in either polarity.Designed for panel mounting, complete with all nutsMeasures: 79mm wide x 80mm height x 60mm deep to the terminal endsMounting hole for the rear section needs to be 70mm diameterLovely round pointer windowDC resistance across the terminals is 50K OhmThe meter’s heritage is clearly marked on the scale and also the rear of the meter (stamped)Also noted is that the case was made by G.W EngineeringYou don’t find meters like these any more