| 摘要 |
A measuring system for measuring direction related volumes, e.g. rooms in a building, is provided with an extractable measuring wire (12), the outer end of which can be moved to desired measuring points within the volume by means of a rod (20). A transducer (16) senses the length of the extracted wire, and two additional transducers (22, 26) sense the direction of the wire to the measuring point vertically and laterally. The output signals of the transducers are fed to a calculating circuit working the signals to a suitable form to achieve a dimensional drawing on a desired scale. For manual feeding of data related to the measuring point there is a portable keyboard unit (30) and in order to simplifying handling of the device the lower end of the rod (20) is attached to this unit (30). A gyro device (28) provides an outer reference so that measurements regarding different volumes can be related to each other. Thanks to the invention one person alone can perform accurate measurements without difficulty, e.g. of rooms in a building. |
