FR716710A - Perfectionnements apportés aux niveaux - Google Patents
Perfectionnements apportés aux niveauxInfo
- Publication number
- FR716710A FR716710A FR716710DA FR716710A FR 716710 A FR716710 A FR 716710A FR 716710D A FR716710D A FR 716710DA FR 716710 A FR716710 A FR 716710A
- Authority
- FR
- France
- Prior art keywords
- levels
- 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.)
- Expired
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
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
- G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
- G01C9/34—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble of the tubular type, i.e. for indicating the level in one direction only
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US716710XA | 1930-05-10 | 1930-05-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR716710A true FR716710A (fr) | 1931-12-26 |
Family
ID=22102831
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR716710D Expired FR716710A (fr) | 1930-05-10 | 1931-05-07 | Perfectionnements apportés aux niveaux |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR716710A (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2713726A (en) * | 1948-09-23 | 1955-07-26 | Northrop Aircraft Inc | Bubble level condition indicator |
US2713727A (en) * | 1948-12-20 | 1955-07-26 | Northrop Aircraft Inc | Linear bubble level signal device |
-
1931
- 1931-05-07 FR FR716710D patent/FR716710A/fr not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2713726A (en) * | 1948-09-23 | 1955-07-26 | Northrop Aircraft Inc | Bubble level condition indicator |
US2713727A (en) * | 1948-12-20 | 1955-07-26 | Northrop Aircraft Inc | Linear bubble level signal device |
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