Tianjin the Huayin Construction Engineering Instrument Technology Co., Ltd. Digital inclination feet? When his head and jobs, the measured value on the display, easy to read? 0 ° and 90 ° of auditory signals? Simply press the button to activate the lock function, used to keep the measuring results? replication function is used to copy the slant, and transfer to another location? easy-to-read display? 2 bubbles can be used as a level to check the technical data length: 60 cm measuring range: 0 - 360 ° (4 x 90 °) electronic measurement accuracy: 0 ° / 90 ° ± 0.05 ° electronic measurement accuracy: 1 ° -89 ° ± 0.2 ° measurement precision alignment: ± 0.057 ° = ± 1 mm / m Power: 1 x 9 volt 6LR61 run duration, approximately: 200 h automatically cut off power supply: 5 mins Weight (approx.): 0,7 kg width: 25 mm height; 60 mm