GB475134A - Improvements in or relating to theodolites - Google Patents

Improvements in or relating to theodolites

Info

Publication number
GB475134A
GB475134A GB13876/36A GB1387636A GB475134A GB 475134 A GB475134 A GB 475134A GB 13876/36 A GB13876/36 A GB 13876/36A GB 1387636 A GB1387636 A GB 1387636A GB 475134 A GB475134 A GB 475134A
Authority
GB
United Kingdom
Prior art keywords
filter
theodolites
axis
eyepiece head
eyepiece
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
GB13876/36A
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.)
Askania Werke AG
Original Assignee
Askania Werke AG
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 Askania Werke AG filed Critical Askania Werke AG
Publication of GB475134A publication Critical patent/GB475134A/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
    • G01C1/02—Theodolites

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Telescopes (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

475,134. Theodolites. ASKANIAWERKE AKT.-GES. VORM. CENTRALWERKSTATT DESSAU UND C. BAMBERGFRIEDENAU. May 15, 1936, No. 13876. Convention date, May 31, 1935. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 16, 1936.] [Classes 97 (i) and 97 (ii)] An eyepiece head for a theodolite carries a light source 2 for illuminating a lined plate 3, a filter 4 which can be swung out of the optical path, and a support 5 for a finder telescope 6. As shown, current is conducted to the electric lamp 2 through the spring urged contact 7 which upon rotation of the eyepiece head slides on the stationary contact rail 7<1>. The filter 4 swings about an axis 8 perpendicular to the optical axis N.
GB13876/36A 1935-05-31 1936-05-15 Improvements in or relating to theodolites Expired GB475134A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE475134X 1935-05-31

Publications (1)

Publication Number Publication Date
GB475134A true GB475134A (en) 1937-11-15

Family

ID=6541810

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13876/36A Expired GB475134A (en) 1935-05-31 1936-05-15 Improvements in or relating to theodolites

Country Status (1)

Country Link
GB (1) GB475134A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589798A (en) * 1968-03-25 1971-06-29 Minolta Camera Kk Wide-angle lens system with corrected lateral aberration
US3597049A (en) * 1969-03-25 1971-08-03 Minalta Camera Kk Extreme wide angle lens system
US4239327A (en) * 1978-03-06 1980-12-16 Grant Roy W Opaque perforated filter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589798A (en) * 1968-03-25 1971-06-29 Minolta Camera Kk Wide-angle lens system with corrected lateral aberration
US3597049A (en) * 1969-03-25 1971-08-03 Minalta Camera Kk Extreme wide angle lens system
US4239327A (en) * 1978-03-06 1980-12-16 Grant Roy W Opaque perforated filter

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