gacsat
2007.06.13
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Sextant: a navigation instrument that is used to establish position by measuring the height of stars from the horizon. Index mirror: large polished plate that reflects light. Telescope: optical instrument made of lens that magnifies objects. Telescope clamp: reinforcing circle. Eyepiece: lens the user looks through. Telescope printing: lens adjustment. Frame: structure that serves as the base for the different parts of the sextant. Graduated arc: graduated edge of the arc. Locking device: apparatus that holds the sextant in place. Drum: graduated button used to take measurements. Index arm: type of ruler that determines direction or measures an angle. Screw to regulate small mirror: piece of metal used to adjust the horizon mirror. Glass filter: colored transparent substance. Horizon mirror: small polished glass plate that reflects light. Glass filter: colored transparent substance.
Felhívom a figyelmedet az INDEX MORRORra. |
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