Hi,
I have also an insulation tester from Bside laying around. It can measure up to 1000V and 10GOhm.
It is identical to the Mastech MS5203 (ans probably some other).
I compared a 100MOhm resistor (with a lot of tolerance) with a real meter and it matches nicely:
![Sold [EU] Bside AIM01 insulation tester up to 1000V 2285073-1](https://www.eevblog.com/forum/index.php?action=dlattach;topic=431119.0;attach=2285075;image)
The meter itself comes with the test leads and the manual.
![Sold [EU] Bside AIM01 insulation tester up to 1000V 2285065-3](https://www.eevblog.com/forum/index.php?action=dlattach;topic=431119.0;attach=2285067;image)
I'm asking for negotiable 100€. Shipping is possible.
Best regards
Andreas