Patent ID: 8256127

Claim:
A detecting apparatus for detecting a vertical distance between a first axis and a second axis on a workpiece, wherein two side holes are defined on the workpiece along the first axis, and a bottom hole is defined on the workpiece along the second axis, the detecting apparatus comprising: a supporting plate to support the workpiece; a first positioning member and a second positioning member arranged on the supporting plate along the first axis, wherein the first positioning member is capable of engaging one of the side holes, and the second positioning member is capable of sliding along the first axis relative to the supporting plate to engage the other side hole; and a measuring member arranged on the supporting plate along the second axis, wherein the measuring member is capable of sliding along the second axis relative to the supporting plate; if the measuring member is able to pass the bottom hole of the workpiece, the vertical distance between the first axis and the second axis is qualified, and if the measuring member is unable to pass the bottom hole of the workpiece, the vertical distance between the first axis and the second axis is not qualified.