| 发明名称 |
PENDULOUS RANGE FINDING DEVICE |
| 摘要 |
A range finding device using the principle of triangulation and having a pendulous member selectively adjustable in low-frictional engagement about a support axle and lockable in an adjusted position with an indicator relative an expanded scale.
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| 申请公布号 |
US3639997(A) |
申请公布日期 |
1972.02.08 |
| 申请号 |
USD3639997 |
申请日期 |
1970.11.16 |
| 申请人 |
BELL & HOWELL CO. |
发明人 |
HENRY J. KOEBER |
| 分类号 |
G01C3/02;G01C9/12;G03B3/00;(IPC1-7):G01C1/00;G01C3/00 |
主分类号 |
G01C3/02 |
| 代理机构 |
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代理人 |
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