FR2292953A1 - Detecteur optique d'horizontalite - Google Patents
Detecteur optique d'horizontaliteInfo
- Publication number
- FR2292953A1 FR2292953A1 FR7536246A FR7536246A FR2292953A1 FR 2292953 A1 FR2292953 A1 FR 2292953A1 FR 7536246 A FR7536246 A FR 7536246A FR 7536246 A FR7536246 A FR 7536246A FR 2292953 A1 FR2292953 A1 FR 2292953A1
- Authority
- FR
- France
- Prior art keywords
- bubble
- photocells
- bulb
- spirit level
- light source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/02—Details
- G01C9/06—Electric or photoelectric indication or reading means
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US52777474A | 1974-11-27 | 1974-11-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2292953A1 true FR2292953A1 (fr) | 1976-06-25 |
FR2292953B1 FR2292953B1 (fr) | 1979-05-11 |
Family
ID=24102873
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7536246A Granted FR2292953A1 (fr) | 1974-11-27 | 1975-11-26 | Detecteur optique d'horizontalite |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS5177356A (fr) |
FR (1) | FR2292953A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2368694A1 (fr) * | 1976-10-22 | 1978-05-19 | Singer Co | Appareil de detection de limite d'inclinaison |
WO1990013792A1 (fr) * | 1987-11-09 | 1990-11-15 | Metrum Oy | Procede et dispositif de detection de direction ou d'angle |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5560816A (en) * | 1978-10-31 | 1980-05-08 | Kazuhiro Toida | Automatic reading method for data at indexed position of instrument |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3371424A (en) * | 1965-03-25 | 1968-03-05 | Northern Electric Co | Reference attitude indicating device |
-
1975
- 1975-11-26 FR FR7536246A patent/FR2292953A1/fr active Granted
- 1975-11-27 JP JP14125075A patent/JPS5177356A/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2368694A1 (fr) * | 1976-10-22 | 1978-05-19 | Singer Co | Appareil de detection de limite d'inclinaison |
WO1990013792A1 (fr) * | 1987-11-09 | 1990-11-15 | Metrum Oy | Procede et dispositif de detection de direction ou d'angle |
Also Published As
Publication number | Publication date |
---|---|
JPS5177356A (ja) | 1976-07-05 |
FR2292953B1 (fr) | 1979-05-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |