TMK 500 multimeter 1970's - Page 2 - UK Vintage Radio Repair and Restoration Discussion Forum

MrElectronicman · 27th Mar 2017, 10:42 pm

I have one of these too, also bought it in the 60's.

Mine has some problems with the Ohms ranges due to the switch having printed contacts, and the rotating spring loaded plunders have worn down the tinned copper and has spread the remains around the circular track, messing up the Ohms range.

The DC and AC ranges appear to be OK, so I still use it for those.

Not bad for something 50 years old, and very good value for money.

27th Mar 2017, 10:42 pm	#21
MrElectronicman Heptode Join Date: Feb 2011 Location: Washington DC, USA Posts: 619	Re: TMK 500 multimeter 1970's I have one of these too, also bought it in the 60's. Mine has some problems with the Ohms ranges due to the switch having printed contacts, and the rotating spring loaded plunders have worn down the tinned copper and has spread the remains around the circular track, messing up the Ohms range. The DC and AC ranges appear to be OK, so I still use it for those. Not bad for something 50 years old, and very good value for money. __________________ David