megohmmeters, calibrate or not?

Discussion in 'General Electronics Chat' started by strantor, Oct 23, 2010.

  1. strantor

    Thread Starter AAC Fanatic!

    Oct 3, 2010
    I picked up a pair of General Radio 1864 megohmmeters that were being scrapped at work. They look in real bad shape on the outside, really dirty and cracked dials/ rotten plastic. Inside, they look brand new and they seem to work. I am in the process of cleaning them up & fixing aged hardware. My original plan was just to take them apart and play with their guts until I searched the net and found out that they are being sold for >5000$ (in perfect condition, of course. and calibrated). So, I was just wondering how much it would cost to get them calibrated, and how much more they would be worth if they were calibrated.
  2. marshallf3

    Well-Known Member

    Jul 26, 2010
  3. debe

    Senior Member

    Sep 21, 2010
    Hi Strantor, shouldnt be too hard to check the acurracy of your Megger. My unit is about 1960s vintage & still being used to check insulation on 240V equipment. to check i just use a known 1M ohm resistor. Daryl