The Megger BD-59092 is a 1000V insulation tester with a wide measurement range of 0.01MΩ to 100GΩ. It features a large, backlit LCD display, automatic discharge, and a rugged design for use in harsh environments.

The Megger BD-59090 is a 10 kV insulation tester with a wide range of features, including:

10 kV output voltage
5 mA output current
100 MΩ insulation resistance range
Polarization index (PI) and dielectric absorption ratio (DAR) measurements
Continuity test
Data logging and storage
* USB interface