GB236111A - Improvements in tacheometers - Google Patents

Improvements in tacheometers

Info

Publication number
GB236111A
GB236111A GB3038424A GB3038424A GB236111A GB 236111 A GB236111 A GB 236111A GB 3038424 A GB3038424 A GB 3038424A GB 3038424 A GB3038424 A GB 3038424A GB 236111 A GB236111 A GB 236111A
Authority
GB
United Kingdom
Prior art keywords
scale
image
circle
projected
telescope
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
GB3038424A
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.)
JOSEPH SZEPESSY
Original Assignee
JOSEPH SZEPESSY
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 JOSEPH SZEPESSY filed Critical JOSEPH SZEPESSY
Priority to GB3038424A priority Critical patent/GB236111A/en
Publication of GB236111A publication Critical patent/GB236111A/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
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/26—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with fixed angles and a base of variable length, at, near, or formed by the object
    • G01C3/28—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with fixed angles and a base of variable length, at, near, or formed by the object with provision for reduction of the distance into the horizontal plane
    • G01C3/30—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with fixed angles and a base of variable length, at, near, or formed by the object with provision for reduction of the distance into the horizontal plane with adaptation to the measurement of the height of an object, e.g. tacheometers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Telescopes (AREA)

Abstract

236,111. Szepessy, J. Dec. 17, 1924. Tacheometers.-In a tacheometer in which the altitude circle is divided according to the tangents of angles of elevation, so as to avoid the necessity for reducing the readings to the horizontal, an image of the scale is projected into the field of the observing telescope. An image of the scale 4, arranged round the periphery of the circle 5, is projected into the field of the telescope 2 by a microscope 16 and reflecting prisms 14, 15, which are so arranged that the plane determined by the broken optical axis x - - x passes through the axis of rotation of the circle 5. The edge 17 of the prism 15 forms a dividing line between the image of the scale and that of the observed staff.
GB3038424A 1924-12-17 1924-12-17 Improvements in tacheometers Expired GB236111A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3038424A GB236111A (en) 1924-12-17 1924-12-17 Improvements in tacheometers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3038424A GB236111A (en) 1924-12-17 1924-12-17 Improvements in tacheometers

Publications (1)

Publication Number Publication Date
GB236111A true GB236111A (en) 1925-07-02

Family

ID=10306824

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3038424A Expired GB236111A (en) 1924-12-17 1924-12-17 Improvements in tacheometers

Country Status (1)

Country Link
GB (1) GB236111A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2616177A (en) * 1947-11-03 1952-11-04 Willis O Bazhaw Apparatus and method of surveying elevations
US2650431A (en) * 1951-03-08 1953-09-01 Callahan Ezra Leo Device for measuring horizontal and vertical angles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2616177A (en) * 1947-11-03 1952-11-04 Willis O Bazhaw Apparatus and method of surveying elevations
US2650431A (en) * 1951-03-08 1953-09-01 Callahan Ezra Leo Device for measuring horizontal and vertical angles

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