FR2265067A1 - Solar navigation instrument - has graduated base, protractor and cross frame to determine latitude- longitude - Google Patents

Solar navigation instrument - has graduated base, protractor and cross frame to determine latitude- longitude

Info

Publication number
FR2265067A1
FR2265067A1 FR7409079A FR7409079A FR2265067A1 FR 2265067 A1 FR2265067 A1 FR 2265067A1 FR 7409079 A FR7409079 A FR 7409079A FR 7409079 A FR7409079 A FR 7409079A FR 2265067 A1 FR2265067 A1 FR 2265067A1
Authority
FR
France
Prior art keywords
protractor
cross frame
longitude
graduated
navigation 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.)
Granted
Application number
FR7409079A
Other languages
French (fr)
Other versions
FR2265067B3 (en
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.)
DUNN GERALD GB
Original Assignee
DUNN GERALD GB
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 DUNN GERALD GB filed Critical DUNN GERALD GB
Priority to FR7409079A priority Critical patent/FR2265067A1/en
Publication of FR2265067A1 publication Critical patent/FR2265067A1/en
Application granted granted Critical
Publication of FR2265067B3 publication Critical patent/FR2265067B3/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B49/00—Time-pieces using the position of the sun, moon or stars
    • G04B49/02—Sundials
    • 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
    • G01C21/02—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by astronomical means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G1/00—Hand manipulated computing devices
    • G06G1/14—Hand manipulated computing devices in which a straight or curved line has to be drawn from given points on one or more input scales to one or more points on a result scale

Abstract

The solar navigation instrument can be used to obtain data to determine latitude and longitude of a navigating point without reference to the earth horizon. It can be used for coastal navigation in conjunction with reference points. It consists of five components: a base plate, a protractor, a pivot, a pointer and a cross frame. The base plate has a reference meridian line which can be aligned with the horizontal, a line perpendicular to the meridian line, and a graduated declination arc. The protractor can be moved about the pivot to determine angles in conjunction with the pointer. The cross frame is graduated with time scales and is used to determine apparent solar local time.
FR7409079A 1974-03-18 1974-03-18 Solar navigation instrument - has graduated base, protractor and cross frame to determine latitude- longitude Granted FR2265067A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7409079A FR2265067A1 (en) 1974-03-18 1974-03-18 Solar navigation instrument - has graduated base, protractor and cross frame to determine latitude- longitude

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7409079A FR2265067A1 (en) 1974-03-18 1974-03-18 Solar navigation instrument - has graduated base, protractor and cross frame to determine latitude- longitude

Publications (2)

Publication Number Publication Date
FR2265067A1 true FR2265067A1 (en) 1975-10-17
FR2265067B3 FR2265067B3 (en) 1977-01-07

Family

ID=9136446

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7409079A Granted FR2265067A1 (en) 1974-03-18 1974-03-18 Solar navigation instrument - has graduated base, protractor and cross frame to determine latitude- longitude

Country Status (1)

Country Link
FR (1) FR2265067A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH669084GA3 (en) * 1987-05-14 1989-02-28 Sunshade-sundial using shadow of spike on cover - indicates time of day when deployed sunshade rests on ground with inclined shaft pointing to North

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH669084GA3 (en) * 1987-05-14 1989-02-28 Sunshade-sundial using shadow of spike on cover - indicates time of day when deployed sunshade rests on ground with inclined shaft pointing to North

Also Published As

Publication number Publication date
FR2265067B3 (en) 1977-01-07

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Legal Events

Date Code Title Description
ST Notification of lapse