Abstract: A manual gauge measures a specimen's thickness by pressing surface contactors against its opposing surfaces. A rigid C-frame has upper and lower jaws providing a means for engaging a specimen and for gauging its thickness using a linear probe that is caused to move linearly between the jaws by a handle assembly. The handle assembly is joined with the C-frame at a point that is co-linear with a force vector of the probe against a workpiece resting on one of the jaws. The force of the probe is transmitted through the specimen to the jaw. The handle leverages from this jaw so that there is no force applied between the jaws thereby avoiding error due to the varying hand pressure by the operator and the resultant strain in the C-frame during measurements.

Abstract: A manual gauge measures a specimen's thickness by pressing surface contactors against its opposing surfaces. A rigid C-frame has upper and lower jaws providing a means for engaging a specimen and for gauging its thickness using a linear probe that is caused to move linearly between the jaws by a handle assembly. The handle assembly is joined with the C-frame at a point that is co-linear with a force vector of the probe against a workpiece resting on one of the jaws. The force of the probe is transmitted through the specimen to the jaw. The handle leverages from this jaw so that there is no force applied between the jaws thereby avoiding error due to the varying hand pressure by the operator and the resultant strain in the C-frame during measurements.

Abstract: A system enables indirect determination of a position vector (VR) of a point position (P). The system uses two fixed trackers (10 and 10?) whose absolute positions are known. A movable measuring device (20) provides a rigid rod (25) supporting a pair of reflectors (30 and 30?) which are mounted at fixed positions. A reference point (R) is mounted at a further fixed position on the rod (25) and is on a straight line (L) through the reflectors (30 and 30?). Light beams from the trackers (10 and 10?) acquire the reflectors (30 and 30?) so that when the reference point (R) is positioned at the point position (P), the position vector (VR) of point position (P) is determinate by vector addition.

Abstract: A system enables indirect determination of a position vector (VR) of a point position (P). The system uses two fixed trackers (10 and 10?) whose absolute positions are known. A movable measuring device (20) provides a rigid rod (25) supporting a pair of reflectors (30 and 30?) which are mounted at fixed positions. A reference point (R) is mounted at a further fixed position on the rod (25) and is on a straight line (L) through the reflectors (30 and 30?). Light beams from the trackers (10 and 10?) acquire the reflectors (30 and 30?) so that when the reference point (R) is positioned at the point position (P), the position vector (VR) of point position (P) is determinate by vector addition.