-270mm aluminium inclinometer & spirit level - compact, precise and tough -High accuracy: 0.1° at 0°, 45° & 90°; 0.2° at all other angles. -Bright 55×15mm illuminated display with auto-rotate view -Multiple readouts: Degrees, %, mm/m, in/ft - with hold & reference function -Horizontal & vertical green spirit vials for quick checks and accurate to 0.5mm/M -Magnetic milled base for secure hands-free use on steel surfaces -Double rubberised end caps for superior drop & shock protection -Powered by 2 × AAA batteries (not included)