| 摘要 |
The angle indicator (3) includes a ruler-type arm which permits alignment with a specific target. It can also have a magnifying unit to permit reading of small scale units. On at last one side (2) of the plate (1) is at least one multiplicator graduation (5), formed on a mathematical calculation or function. Other graduations e.g. angle degrees (6) may be incorporated. - The plate has at least one corner (7) in th 90 deg. angle to permit distance measurement. The 90 deg. angle measurement may be replaced optical mirrors, prisms, etc. likewise a composite ruler system can be used forming so-called bi-pole cornering, pref. a triangle. The angle or multiplicator indicator has a rotation point (8) or several such points. The indicator can be moved to the different points (8') to permit angle measurement, and measurement over long distances. An increasing or reducing coefficient can be obtained by movement to another rotation point. |
