GB155379A - Improvements in calculating instruments - Google Patents

Improvements in calculating instruments

Info

Publication number
GB155379A
GB155379A GB2311919A GB2311919A GB155379A GB 155379 A GB155379 A GB 155379A GB 2311919 A GB2311919 A GB 2311919A GB 2311919 A GB2311919 A GB 2311919A GB 155379 A GB155379 A GB 155379A
Authority
GB
United Kingdom
Prior art keywords
angles
plane
arm
calculating instruments
gallier
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
GB2311919A
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.)
JOHN MACGILLIVRAY
Original Assignee
JOHN MACGILLIVRAY
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 JOHN MACGILLIVRAY filed Critical JOHN MACGILLIVRAY
Priority to GB2311919A priority Critical patent/GB155379A/en
Publication of GB155379A publication Critical patent/GB155379A/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
    • G01C1/00—Measuring angles
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G1/00—Hand manipulated computing devices
    • G06G1/02—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales
    • G06G1/04—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

155,379. Gallier, W. H., (MacGillivray, J.). Sept. 19, 1919. Plane-trigonometry calculators. - A plane trigonometric calculator for use in surveying, navigation &c. comprises a quadrant-shaped base member 1 provided with two linear scales 3, 4 at right-angles and with a graduated arm 7 pivoted at the origin 6 and movable over a scale of angles 5. Co-ordinates may be drawn as shown and the arm may have clamping-means 11 and a vernier 13 projecting on one or both sides.
GB2311919A 1919-09-19 1919-09-19 Improvements in calculating instruments Expired GB155379A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2311919A GB155379A (en) 1919-09-19 1919-09-19 Improvements in calculating instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2311919A GB155379A (en) 1919-09-19 1919-09-19 Improvements in calculating instruments

Publications (1)

Publication Number Publication Date
GB155379A true GB155379A (en) 1920-12-20

Family

ID=10190399

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2311919A Expired GB155379A (en) 1919-09-19 1919-09-19 Improvements in calculating instruments

Country Status (1)

Country Link
GB (1) GB155379A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3141241A (en) * 1960-07-21 1964-07-21 David H Scott Aerial navigation device
FR2467088A1 (en) * 1978-04-26 1981-04-17 Brighty Sidney DEVICE FOR MARKING POINTS ON A DRAWING SURFACE
US4303299A (en) * 1979-05-21 1981-12-01 Clark Gary R Hand-held instrument for inspecting drill bits

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3141241A (en) * 1960-07-21 1964-07-21 David H Scott Aerial navigation device
FR2467088A1 (en) * 1978-04-26 1981-04-17 Brighty Sidney DEVICE FOR MARKING POINTS ON A DRAWING SURFACE
US4303299A (en) * 1979-05-21 1981-12-01 Clark Gary R Hand-held instrument for inspecting drill bits

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