Topcon AD-17B Charger for BT-79Q Battery [RL-H5] UL633 Accessory This electronics only gradiometer features

This electronics only gradiometer features an RS-232 PC connection for controlling keypad functions

The built-in calculator allows you to easily add or subtract length

A Keson bestseller

User-Friendly Features: The battery pack can be charged even while the laser is in use and does not impede the laser's operation at all

Each level offers two measuring surfaces and an accuracy of ±1/32 inch at 72 inches

Topcon AD-17B Charger for BT-79Q Battery [RL-H5] UL633 Accessory This electronics only gradiometer featuresThe AD 17B Charger for RL H5 Rotary Laser effectively charges the Topcon BT 79Q battery, which gives power to the Topcon RL H5 (RL H5A & RL H5B) Rotary Lasers. It has an input capacity of 100 240 VAC 50 60 Hz. This AC adaptor is built for USA use.