GB191011750A - Improvements in Sighting Compasses and like Instruments. - Google Patents

Improvements in Sighting Compasses and like Instruments.

Info

Publication number
GB191011750A
GB191011750A GB191011750DA GB191011750A GB 191011750 A GB191011750 A GB 191011750A GB 191011750D A GB191011750D A GB 191011750DA GB 191011750 A GB191011750 A GB 191011750A
Authority
GB
United Kingdom
Prior art keywords
compasses
sighting
instruments
clinometers
sight
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
Inventor
Frederick Beames
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
Application granted granted Critical
Publication of GB191011750A publication Critical patent/GB191011750A/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)
  • Aerials With Secondary Devices (AREA)
  • Telescopes (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

11,750. Beames, F. May 12. Prismatic compasses; sighting-clinometers.-A device for attachment to compasses, clinometers, and like instruments for sighting and reading angles, of the type provided with a hinged sight g, and a hinged reflector d, has toes a' upon the frame a to engage with the case of the compass or the like, and a sight-line e inscribed on the mirror d in which the scale is reflected.
GB191011750D 1910-05-12 1910-05-12 Improvements in Sighting Compasses and like Instruments. Expired GB191011750A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191011750T 1910-05-12

Publications (1)

Publication Number Publication Date
GB191011750A true GB191011750A (en) 1911-05-04

Family

ID=32561874

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191011750D Expired GB191011750A (en) 1910-05-12 1910-05-12 Improvements in Sighting Compasses and like Instruments.

Country Status (1)

Country Link
GB (1) GB191011750A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2953060A (en) * 1957-02-15 1960-09-20 Ilon Ind Inc Position finding device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2953060A (en) * 1957-02-15 1960-09-20 Ilon Ind Inc Position finding device

Similar Documents

Publication Publication Date Title
GB191011750A (en) Improvements in Sighting Compasses and like Instruments.
GB774437A (en) Auxiliary instrument for the use with levelling instruments
US765493A (en) Reflection-measuring instrument.
US1254361A (en) Magnetic compass.
US1223615A (en) Pocket surveying instrument.
US1674321A (en) Camera lucida
GB406336A (en) Improvements in or relating to binoculars, monoculars, telescopes and like viewing instruments
GB205668A (en) Improvements in surveying instruments
GB190515434A (en) Improvements in Surveying Instruments
US707161A (en) Surveying and reconnaissance instrument.
GB191207490A (en) Improvements in Mariners Liquid Compass.
GB191301012A (en) Improvements in Sextants.
GB384847A (en) Improvements in or relating to apparatus for facilitating the reading of navigational instruments
GB191507153A (en) An Improved Magnetic Compass.
US193552A (en) Improvement in azimuth-circles for attachment to ships compasses
GB191502750A (en) An Improved Magnetic Compass.
GB745529A (en) Artificial horizon
GB190327429A (en) Improvements in Sketching Instruments.
GB1262548A (en) Indicator system for angle-measuring instruments including an altitude circle
GB190625670A (en)
GB191322499A (en) An Improved Pocket Theodolite.
GB191003116A (en) Improvements in Surveying Apparatus.
GB191311561A (en) Improvements in or relating to Mariners' Compasses of the Projector Type.
GB191121530A (en) Improvements in the Construction of Hand Altimeters.
Dolland A Catalog of Mathematical, Optical and Philosophical Instruments, made by G. Dollond