BE445421A - - Google Patents

Info

Publication number
BE445421A
BE445421A BE445421DA BE445421A BE 445421 A BE445421 A BE 445421A BE 445421D A BE445421D A BE 445421DA BE 445421 A BE445421 A BE 445421A
Authority
BE
Belgium
Prior art keywords
ring
graduated
graduation
instrument
angle
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE445421A publication Critical patent/BE445421A/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/14—Viewfinders

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
BE445421D BE445421A (OSRAM)

Publications (1)

Publication Number Publication Date
BE445421A true BE445421A (OSRAM)

Family

ID=101821

Family Applications (1)

Application Number Title Priority Date Filing Date
BE445421D BE445421A (OSRAM)

Country Status (1)

Country Link
BE (1) BE445421A (OSRAM)

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