GB1058367A - Improvements in or relating to levelling staffs - Google Patents

Improvements in or relating to levelling staffs

Info

Publication number
GB1058367A
GB1058367A GB5214264A GB5214264A GB1058367A GB 1058367 A GB1058367 A GB 1058367A GB 5214264 A GB5214264 A GB 5214264A GB 5214264 A GB5214264 A GB 5214264A GB 1058367 A GB1058367 A GB 1058367A
Authority
GB
United Kingdom
Prior art keywords
staff
levelling
relating
dec
circuit
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
GB5214264A
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 GB5214264A priority Critical patent/GB1058367A/en
Publication of GB1058367A publication Critical patent/GB1058367A/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
    • G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • G01C15/02—Means for marking measuring points
    • G01C15/06—Surveyors' staffs; Movable markers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

1,058,367. Levelling staves. N. R. WALLIS. Dec.21, 1965 [Dec.22, 1964], No.52142/64. Heading G1F. A surveyor's levelling staff comprises at least one mercury switch in circuit with a lamp at the head of the staff the contacts of the switch only being completed when the staff is vertical so that an indication of this is given to an operator sighting on the staff. The circuit may include an interrupter unit so that when the mercury switch contacts are closed the light flashes on and off.
GB5214264A 1964-12-22 1964-12-22 Improvements in or relating to levelling staffs Expired GB1058367A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5214264A GB1058367A (en) 1964-12-22 1964-12-22 Improvements in or relating to levelling staffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5214264A GB1058367A (en) 1964-12-22 1964-12-22 Improvements in or relating to levelling staffs

Publications (1)

Publication Number Publication Date
GB1058367A true GB1058367A (en) 1967-02-08

Family

ID=10462788

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5214264A Expired GB1058367A (en) 1964-12-22 1964-12-22 Improvements in or relating to levelling staffs

Country Status (1)

Country Link
GB (1) GB1058367A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020106231A1 (en) * 2018-11-23 2020-05-28 Ozyegin Universitesi Geodetic levelling staff and method of use thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020106231A1 (en) * 2018-11-23 2020-05-28 Ozyegin Universitesi Geodetic levelling staff and method of use thereof
US20220011109A1 (en) * 2018-11-23 2022-01-13 Ozyegin Universitesi Geodetic levelling staff and method of use thereof

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