from The Century Dictionary.
- noun A telescope used in reading a scale placed at a distance or reflected in a mirror.
- noun Specifically, a simple form of cathetometer. It consists of a telescope which has an object-lens and a negative eyepiece containing a spider-line or cross-wire. A level is attached to the top of the telescope, which may stand on a tripod or be movable about and up and down a vertical standard.
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