| 摘要 |
<p>A gauge (10, 110) for determining when an object, e.g. a cutting tool, is a predetermined distance (D) from a surface e.g. a machine tool surface. The gauge has a body (11, 111) having a datum base surface (41) for placing against said surface and a probe (16, 116) mounted in the body for axial movement and which has a contact surface (18, 118) for contact with the tool. An electrical ciurcuit (C1 C2, C3 C4 C5) arranged within the body includes an indicator (33, 133) and a battery (26, 126) which are connected so that the indicator is operably connected internally of the body with the battery by the probe (16, 116) when the contact surface (18, 118) is a known distance (D) from the datum surface (41). The gauge is a self contained unit which does not use the machine tool as part of its electrical circuit.</p> |
