luxvision LM 300, Руководство пользователя

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12. Lens Pushing Hand Lever
It is used to move lens pushing board back and forth.
13. Diopter Measuring Hand-wheel
3.2 Drone and Eyepiece Dividing Plate (Fig.4)
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16
Round-dot drone
Cross-line drone
Fig. 4
14. Liquid Crystal Display Screen
It displays diopter value of the measured lens.
15. Eyepiece Dividing Plate
Prism degree measuring scale and calibrated dial are marked on it. Prism
degree is marked with space of 1
∆ , where, integral prism degree is read
directly on the measuring scale, and decimal prism degree is read by
estimation from measuring scale. Calibrated dial 0
~ 180° is marked with
space of 1°, and 180º ~ 360° with space of 5°.
16. Drone
Distinct image of mark dividing plate involves round-dot drone and cross-line
drone.