abstract |
The invention provides a kind of vertebra to support range unit, includes feeler lever, resistive conductor;The feeler lever includes the body of rod and probe;The body of rod is made up of insulating materials;Resistive conductor is separated with popping one's head in by the body of rod;The feeler lever includes the first feeler lever and the second feeler lever;The resistive conductor is located between the first feeler lever and the second feeler lever.Distance the present invention is supported using the principle of slide rheostat vertebra measures, while uses electronic display, can directly read distance values, simple and convenient. |