DEVON DIGITAL LEVEL 600MM W/LASER 
Devon is a range of quality laser measuring tools designed for professional use. Devon for accurate, simple and fast measurement. 

Technical Specification: 

Laser Wave Length – 635-665nm 
Laser Class – 2, max laser output =1mW 
Battery – 2 x 1.5V AAA 
Estimated Battery Life – 10 hours with alkaline batteries 
Angle Measuring Range – 0 to 360º 
Optimum Operation Range – -5 to 40º 
Accuracy of Vials – ±0.05º (level or plumb) / ±0.1º (other angles) 
Accuracy of Laser – ±10mm @ 30M 
Supplied with batteries, protective case & manual.