GB190915472A - An Improved Instrument for Surveying and like purposes. - Google Patents

An Improved Instrument for Surveying and like purposes.

Info

Publication number
GB190915472A
GB190915472A GB190915472DA GB190915472A GB 190915472 A GB190915472 A GB 190915472A GB 190915472D A GB190915472D A GB 190915472DA GB 190915472 A GB190915472 A GB 190915472A
Authority
GB
United Kingdom
Prior art keywords
sighting
surveying
purposes
instrument
improved instrument
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
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.)
FRANCIS BARKER AND SON Ltd
Original Assignee
FRANCIS BARKER AND SON Ltd
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 FRANCIS BARKER AND SON Ltd filed Critical FRANCIS BARKER AND SON Ltd
Application granted granted Critical
Publication of GB190915472A publication Critical patent/GB190915472A/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
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/02—Magnetic compasses
    • G01C17/04—Magnetic compasses with north-seeking magnetic elements, e.g. needles
    • G01C17/10—Comparing observed direction with north indication
    • G01C17/12—Comparing observed direction with north indication by sighting means, e.g. for surveyors' compasses

Landscapes

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

Abstract

15,472. Asten, J. C., and Barker & Son, F. July 2. Sighting - clinometers.-In a sighting - clinometer of the type in which a clinometer disk g is mounted in a casing a so that the graduations on its flanged end can be read through the sighting-telescope b, a compass dial is similarly fitted on the other side of the casing, so that on turning the instrument through a rightangle, readings in azimuth can also be taken. Spirit levels i, k are fitted so that the instrument can be correctly adjusted in either position, and it may be mounted on a tripod head.
GB190915472D 1909-07-02 1909-07-02 An Improved Instrument for Surveying and like purposes. Expired GB190915472A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190915472T 1909-07-02

Publications (1)

Publication Number Publication Date
GB190915472A true GB190915472A (en) 1910-07-04

Family

ID=32556487

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190915472D Expired GB190915472A (en) 1909-07-02 1909-07-02 An Improved Instrument for Surveying and like purposes.

Country Status (1)

Country Link
GB (1) GB190915472A (en)

Similar Documents

Publication Publication Date Title
GB190915472A (en) An Improved Instrument for Surveying and like purposes.
US669068A (en) Leveling instrument.
US1058512A (en) Protractor.
US736073A (en) Level and plumb.
US765493A (en) Reflection-measuring instrument.
US1122349A (en) Level.
US2590115A (en) Bearing circle
US931359A (en) Attachment for compasses.
GB190911327A (en) Improved Angle-measuring Surveying Instrument.
GB190902077A (en) Improvements in and relating to Instruments for the Determination of Angles, Distances and the like.
US1133887A (en) Level.
US774566A (en) Initial-reading indicator for surveyors' instruments.
GB190719224A (en) Improvements in and relating to Mariners' Compasses.
US104577A (en) Improvement in combined rule
GB191201144A (en) An Improved Levelling or Surveying Instrument.
GB205668A (en) Improvements in surveying instruments
GB190624084A (en) Improvements in or connected with Magnetic Compasses
GB191322499A (en) An Improved Pocket Theodolite.
GB191314083A (en) Improvements relating to Magnetic Compasses and like Instruments.
GB191108800A (en) An Improved Instrument for use in Making Geological and other Surveys.
GB191202129A (en) Improvements in Levelling Staffs.
GB191511648A (en) Improvements in Gauges.
GB191505091A (en) Improvements in and relating to Range Finders.
GB190502720A (en) Improvements in Azimuth Instruments.
GB224258A (en) Improved level