LM60e Digital Infrared Laser Distance Meter Portable 60m Range Finder for Building Construction Item Type: Distance Meter Material: ABS Model: LM60e Battery: 1.5V 2 x AAA Battery (Battery Not Included) Uses: Indoor and outdoor decoration design and construction; factory supervision site and project acceptance; public facilities planning, gardens, electricity, etc. Range: 60m / 196.9ft Accuracy: ±(2.0mm+5x10-5D) Single Measurement: Support Continuous Measurement: Support Area Measurement: Support Volume Measurement: Support One Pythagorean Measurement: Support Second Pythagorean Measurement 1: Support Second Pythagorean Measurement 2: Support Addition/Subtraction: Support Screen Type: 1.8in Positive Display Screen Measurement Datum: Front/Rear Datum Unit of Measurement: m/ft/in/ft+in Historical Measurement Records: 20 Groups Automatic Shutdown: Automatic shutdown after three minutes of inactivity Laser Class: Class 2 Laser Type: 630-670nm, <1mW Working Temperature: 0℃-40℃ (32℉-104℉)