លក្ខណៈពិសេស:

1, 150 មមអ៊ីណុក Hardend អេឡិចត្រូនិឌីជីថល caliper

2, mm/inch conversion at any position,zero setting at any position

3, Can measuring inner diamete^outer diamete^iepth and step

4, Low voltage warning by flashing display

5, DuraNe plastic display case

6, Manual power on/off or auto power off