Class II laser spirit level with one vertical and one adjustable vial for measuring gradients up to 90. Level accuracy 0.5mm in 1mtr (0.028). Supplied with rotating base with three levelling feet and bubble level. Also includes 90 prism and line prism for simple generation of vertical and horizontal reference points. Lightweight and fully adjustable aluminium tripod included. Supplied in carry-case. Powered by 2 x AAA cells (not included).