EXTECH DT300 LASER DISTANCE METER

Measures from 2 " to 164' ( 0.5 to 50m) Automatically calculates Area and Volume Indirect measurement using Pythagorean theorem Continuous measurement function with Min/ Max distance tracking updates every 0.5 seconds Addition/ Subtraction Front or rear edge reference Low battery indicator Double molded housing ( IP54) Auto power off Specifications: Measurement Range: 2 " to 164' ( 0.5 to 50m) . Accuracy ( up to 32’ / 10m) : ± 0.06” ( ± 1.5mm) . Resolution: 0.001 " ( 0.001m) . Length Add calculation: 99' 11 " ( 99.99m) . Area calculation: 999.99 sq. ft. ( 999.99m 2 ) . Volume calculation: 999.99 cu. ft. ( 999.99m 3. Laser Power Off: after 30 seconds. Auto Power Off: after 3 minutes. Power Supply: 2 AAA Batteries. Dimensions: 4.5 x 1.9 x 1.1 " ( 115 x 48 x 28mm) . Weight: 5.3oz ( 150g) .