Shipping Policy : 1.Battery and Liquid not included during the shipping. 2.WE ship the products by DHL ,FEDEX ,UPS or other express etc. Applications: *For screen tension testing. The ideal and necessary tool for production of precise screen and steel mesh. * The ideal and necessary tool for production of precise screen and steel mesh. Can avoid the personal or tactile measurement error. * LCD digital display, eliminating reading error. Parameters: Measurement Range: 7~40 N/cm Display Range: 0~50N/cm Resolution: 0.1 Accuracy: +/-0.5 N/cm Operating Environment: Temperature:0 ~ 40 C; Humidity:10 ~ 90%RH Power Supply: 4x 1.5 V AAA Size (UM-4) Battery(Battery not included in the package） Declension: 175x 95 x 40mm Weight: 490 g (Not Including Batteries) Package includes: Standard Accessories: 1* Main Unit 1* Carrying Case 1* Operation Manual Data in the table is based on testing condition of Swiss thick gauze. Concrete data depends on the quality of network machine. With good quality network machine, the gauze will not crack even in the highest tension. but if it exceeds the maximum tension, the gauze crackes easily, please reference when trapping net.