CALL: A.WIHARTA 081294124885 085778084789 087784022201 Karya Mandiri Instrument indonesia adalah supplier peralatan laboratorium baik eletronik maupun mekanik, serta berbagai macam instrument measurement, dengan didukung dari berbagai macam merk dari negara negara Eropa, US, dan beberapa negara di Asia seperti Korea, Japan dan Taiwan. Instrument yang kami sediakan seperti : Anemometer, Analitical Balance, Spectrophotometer, pHmeter, Laser survey, Micropipette, Peristaltic Pump, Flame photometer, Water bath heating cooling, Colorimeter, Water Strirer, Viscometer. Freezers, Refractometer, Polarimeter, Sound Level meter, Tachometer. Dll Kami juga menerima jasa service dan kalibrasi untuk peralatan laboratorium sesuai kemampuan kami.   Spesifikasi: Display : 4-Digit LCD Display Minimum display : 0.1 mm Work Frequency: 5MHz Measuring Range : 1.2 to 225.0 mm ( steel) Minimum limit for tube measuring : diameter 20* 3mm ( steel) Accuracy : + / - ( 1% H+ 0.1) mm H denotes the measured thickness. Sound velocity range : 1000 to 9999 m/ s Measuring sound velocity with a given thickness: Measuring Range : 1000 to 9999 m/ s when the given thickness over 20mm, the accuracy is + / -1% ; when the given thickness less than 20mm, the accuracy is + / - 5% . Operation themperature : 0 degree celcius to 40 degree celcius power supply: 3* 1.5V AAA alkaline batteries Operation current : Normal operation current < / = 50mA with Backlight turn on current < / = 120mA standart-by current : < / = 20uA size: 72* 146* 29mm wight : 202gram