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

    Well-Known 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