> This product has the high protective level IP67(CEI 60529).It can be used in workshop,exposed to coolant,water,dust or oil. > Absolute encoding measuring system can avoid the loss of the measurement origin when the slider is fast moved or interfered. > It can also avoid the trouble of setting origin before measurement each time.The origin won't be lost even after replacing the battery. > Two-button design,menu prompt,simple,convenient and easy to operate. > Manual/automatic power switch.automatic shutdown after 5 minutes without beging used(Some models will automatically reboot at a 16-hour shutdown when the slider is moved.) > Low-voltage alarm,high and low temperature,and other error alarm. > Infinite response speed,no speed error. 6.ABS/INC mode and metric/inch system conversion.