Ultrasonic cable altimeter AR600E description: height measurement range 3 ~ 23m flat measuring range 3 ~ 18m Accuracy 5mm (<10m) 10mm (> 10m) cable minimum spacing 150mm Operating temperature range -10 ℃ ~ 40 ℃ BOT mode from √ TOP lowest measured from the highest point of measurement modes simultaneously measure the number of cables 1-6 √ root automatic shutdown √ LED-backlit display features a low battery indication √ √ welcome letter calls for additional product information ST822 laser rangefinder range to 50ft (15m ) laser rangefinder price, full-featured rangefinder spot sales, can help users easily complete the distance measurements. Because of supersonic technology, you need to do is press the function key and the measurement without additional operations Features: Maximum measuring distance: 50 '/ 15 m. Minimum measuring distance: 2 '/ 60 cm. Accuracy: 99.5% ∮ 0.01 meters. Memory: eight. Automatic shutdown feature. Rangefinder spot sales, Xiamen rangefinder, laser rangefinder provided by 星枫 instruments. If you have any questions about this information or consultation, please contact us now! Our Company: Nanchang 星枫 Instrument Co., Ltd. (www.xingfengyiqi.com) Contact: Zhengjing, or click on "Business League call" direct dialogue with us!