Description : CEM LDM-100 Pro Laser Distance Meter Laser Rangefinder Measure 0.05 to 50m BrandName : CEM ModelNumber : LDM-100 Size : 115mm x 48mm x 28mm MeasurementAccuracy : 1.5mm MeasurementRange : 0.05~50m This professional Laser Distance Meters are designed to give special users a high accuracy, one person distance measuring and estimating tool to measure remote and difficult reaching places. The compact and handy base model was specifically designed for indoor applications. Shortcut keys for addition, subtraction, Pythagoras, area and volume calculation make measuring fast and very reliable. Specification : LDM-40 LDM-100 LDM-70 Measuring Range 0.05to 40m(0.15ft to 131ft) 0.05 to 50m(0.15ft to 190ft) 0.05 to 70m(0.15ft to 230ft) Measuring accuracy(2σ) Typically: ±1.5mm(±0.06in) Typically: ±1.5 mm(± 0.06 in) Typically: ±1.5 mm(± 0.06 in) Smallest unit displayed 1mm 1mm 1mm Measuring units m,in,ft m,in,ft m,in,ft Measuring units Class II 635 nm, < 1mW Class II 635nm,<1mW Class II 635nm,<1mW Measuring units IP 54 IP 54 IP 54 History measurement records 20 20 20 Keyboard Type Super Soft-Touch (Long life) Soft-Touch Keypad Soft-Touch Keypad Operating Temperature 0 C to +40 C(+32 F to +104 F) 0 C to 40 C(32 F to 104 F) 0 C to 40 C(32 F to 104 F) Operating Temperature -10 C to +60 C(14 F to +140 F) -10 C to 60 C(14 F to 140 F) -10 C to 60 C(14 F to 140 F) Battery Life Up to 4,000 measurements Up to 4,000 measurements Up to 5,000 measurements Batteries Type AAA 2 x 1.5V Type AAA 2 x 1.5V Type AAA 2 x 1.5V Auto. laser switch-off after 0.5 min after 0.5 min after 0.5 min Auto instrument switch-off after 3 min after 3 min after 3 min Size(HxWxD) 115mm x 48mm x 28mm Package Includes : 1 x CEM LDM-100 Laser Distance Meter 1 x Bag 1 x User manual 1 x Hanging rope 2 x AAA Battery 1 x Mini screwdriver for you to open the back :) Note : LDM-100 measure range is 50m, But price higher than LDM-70 it is because it is Dust & Moisture proof. Details Pictures :