GB510220A - Combined protractor and calculating device for use in navigational problems - Google Patents

Combined protractor and calculating device for use in navigational problems

Info

Publication number
GB510220A
GB510220A GB34294/38A GB3429438A GB510220A GB 510220 A GB510220 A GB 510220A GB 34294/38 A GB34294/38 A GB 34294/38A GB 3429438 A GB3429438 A GB 3429438A GB 510220 A GB510220 A GB 510220A
Authority
GB
United Kingdom
Prior art keywords
protractor
calculating device
course
navigational problems
combined
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
GB34294/38A
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
Publication of GB510220A publication Critical patent/GB510220A/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
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/20—Instruments for performing navigational calculations

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Drawing Aids And Blackboards (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

510,220. Calculating-apparatus; protractors. SAUCANT, E. J. H. Nov. 25, 1938, No. 34294. Convention date, Dec. 2, 1937. [Class 106 (i)] [Also in Group XX] A combined protractor and calculating device for use in navigational problems is graduated as a protractor b and comprises two sliding scales graduated to indicate magnetic course d and compass course e respectively, and a fixed scale c indicating true course, a cursor (not shown) provided with a marking, line being arranged to co-operate with the sliding scales for reading off courses or bearings.
GB34294/38A 1937-12-02 1938-11-25 Combined protractor and calculating device for use in navigational problems Expired GB510220A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK510220X 1937-12-02

Publications (1)

Publication Number Publication Date
GB510220A true GB510220A (en) 1939-07-28

Family

ID=8151207

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34294/38A Expired GB510220A (en) 1937-12-02 1938-11-25 Combined protractor and calculating device for use in navigational problems

Country Status (1)

Country Link
GB (1) GB510220A (en)

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