GB209609A - Improvements in viewing devices for spirit levels - Google Patents

Improvements in viewing devices for spirit levels

Info

Publication number
GB209609A
GB209609A GB226822A GB226822A GB209609A GB 209609 A GB209609 A GB 209609A GB 226822 A GB226822 A GB 226822A GB 226822 A GB226822 A GB 226822A GB 209609 A GB209609 A GB 209609A
Authority
GB
United Kingdom
Prior art keywords
spirit levels
viewing devices
levels
taylor
viewing
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
Application number
GB226822A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EDWARD WILFRED TAYLOR
Original Assignee
EDWARD WILFRED TAYLOR
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by EDWARD WILFRED TAYLOR filed Critical EDWARD WILFRED TAYLOR
Priority to GB226822A priority Critical patent/GB209609A/en
Publication of GB209609A publication Critical patent/GB209609A/en
Expired legal-status Critical Current

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
    • G01C9/26—Details
    • G01C9/32—Means for facilitating the observation of the position of the bubble, e.g. illuminating means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

209,609. Taylor, A., and Taylor, E. W. Jan. 25, 1923. Levels.-A viewing-device for spirit levels consists of a hinged plate B fitted with a mirror or mirrors A the reflecting surfaces of which are inclined at an obtuse angle so that the separated ends of the bubble appear to an observer at the point D to be brought close to one another.
GB226822A 1922-01-25 1922-01-25 Improvements in viewing devices for spirit levels Expired GB209609A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB226822A GB209609A (en) 1922-01-25 1922-01-25 Improvements in viewing devices for spirit levels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB226822A GB209609A (en) 1922-01-25 1922-01-25 Improvements in viewing devices for spirit levels

Publications (1)

Publication Number Publication Date
GB209609A true GB209609A (en) 1924-01-17

Family

ID=9736565

Family Applications (1)

Application Number Title Priority Date Filing Date
GB226822A Expired GB209609A (en) 1922-01-25 1922-01-25 Improvements in viewing devices for spirit levels

Country Status (1)

Country Link
GB (1) GB209609A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1100988B (en) * 1957-07-24 1961-03-02 Siemens Ag Device for reading off mirror-backed instrument scales
US4639097A (en) * 1983-02-17 1987-01-27 Artur Teske Apparatus for the inspection of combined read/write heads of data carrier disks in EDP installations

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1100988B (en) * 1957-07-24 1961-03-02 Siemens Ag Device for reading off mirror-backed instrument scales
US4639097A (en) * 1983-02-17 1987-01-27 Artur Teske Apparatus for the inspection of combined read/write heads of data carrier disks in EDP installations

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