The original. Simple, two-button operation. 
The Leica DISTO D1 is our most basic, easy-to-use laser distance meter for quick and accurate interior measurements. Turn the D1 on, press the ON/DIST button, and you have an accurate measurement.

Accurate, far-reaching, and lightweight.
With a range of 130 feet (39m) and accuracy to 1/16th of an inch (2mm), the D1 has you covered for basic indoor measurement tasks. Compact and lightweight, the D1 is perfect for measuring at awkward angles or while handling other tools.