GB203459A - Improvements in surveying instruments - Google Patents

Improvements in surveying instruments

Info

Publication number
GB203459A
GB203459A GB18430/22A GB1843022A GB203459A GB 203459 A GB203459 A GB 203459A GB 18430/22 A GB18430/22 A GB 18430/22A GB 1843022 A GB1843022 A GB 1843022A GB 203459 A GB203459 A GB 203459A
Authority
GB
United Kingdom
Prior art keywords
levelling
definite relation
graduations
indices
index
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
GB18430/22A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB18430/22A priority Critical patent/GB203459A/en
Publication of GB203459A publication Critical patent/GB203459A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F16M11/12—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction
    • F16M11/125—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction for tilting and rolling

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

203,459. Tallack, H. T. July 5, 1922. Levelling-heads.-To facilitate the levelling of a surveying-instrument, the correct positioning of the main bubble tube in two directions at rightangles and in definite relation to the levelling screws is ensured by providing the outer centre with a circular member D graduated in definite relation to the positions of the arms C carrying the levelling screws, and providing the revolving body A with an index or indices E disposed in definite relation to the direction of the main bubble tube and adapted to be brought to register with the graduations. Alternatively, the graduations may be carried by the body and the index or indices by the outer centre.
GB18430/22A 1922-07-05 1922-07-05 Improvements in surveying instruments Expired GB203459A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB18430/22A GB203459A (en) 1922-07-05 1922-07-05 Improvements in surveying instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB18430/22A GB203459A (en) 1922-07-05 1922-07-05 Improvements in surveying instruments

Publications (1)

Publication Number Publication Date
GB203459A true GB203459A (en) 1923-09-13

Family

ID=10112304

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18430/22A Expired GB203459A (en) 1922-07-05 1922-07-05 Improvements in surveying instruments

Country Status (1)

Country Link
GB (1) GB203459A (en)

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