Importance

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Abstract

A coordinate measuring system including a multijointed arm. The multijointed arm includes a plurality of transfer housings for producing signals corresponding to the position of the tip of the arm. A serial box mounted to the arm receive signals from the transfer housings and processes the signals for use by a computer. The serial box emits an audible tone when any one of the transfer housings is rotated beyond a predetermined limit. An earphone jack is provided at the serial box for providing the audible tone to earphones. A speaker may also be mounted in one or more of the transfer housings. One or more of the transfer housings may be placed in a locked state preventing rotation of the transfer housing and eliminating a degree of freedom of the arm.

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First Claim