发明名称 |
Scalable measuring apparatus and displacement display device, system and method |
摘要 |
Scalable measuring apparatus for use by an operator with a laser beam from a laser-level transmitter comprising a vertically disposed grade pole having lower and upper extremities. A laser-level receiver is provided for detecting the laser level beam. A controller is mounted on the grade pole and carries the laser-level receiver. At least a portion of the controller is capable of ascending and descending the grade pole. An indicator is electrically coupled to the laser-level receiver for giving a response perceptible to the operator when the laser beam is detected by the laser-level receiver. The controller has a brake for retaining the controller at a predetermined elevation with respect to the grade pole. The controller is capable of ascending and descending the grade pole which is free of markings.
|
申请公布号 |
US5457890(A) |
申请公布日期 |
1995.10.17 |
申请号 |
US19930034524 |
申请日期 |
1993.03.22 |
申请人 |
MOOTY, GLENN J. |
发明人 |
MOOTY, GLENN J. |
分类号 |
G01C15/00;(IPC1-7):G01C15/06 |
主分类号 |
G01C15/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|