| 摘要 |
A device for measuring and indicating the angle between two lines includes a housing having two wheels rotatably mounted therein. The wheels are spaced from each other at a distance predeterminedly related to the radii of the wheels. In one embodiment, a shaft is affixed at a first end to the first wheel. The second end of the shaft extends through the second wheel and is secured to a pointer disposed adjacent to the second wheel. The second wheel is calibrated with indicia indicating the relative rotation of the first and second wheels in degrees so that the position of the pointer relative to the indicia indicates the angle measured by the device. One of the wheels may also include a toothed wheel for transmitting the rotation of the wheel to a linear distance indiating device for measuring the total linear distance traveled by the device. Also disclosed is an embodiment employing electrical components for electrically measuring the angle and providing an indication of the measured angle.
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