| 摘要 |
A monoaxial coarse/fine-adjusting device for optical instruments has a pair of friction wheels (68, 70), the circumferences of which engage with a fine-adjusting spindle (22). The shafts (72, 74) carrying the friction wheels (68, 70) are accommodated by slots (58, 60) of a coarse-adjusting spindle (18), and the coarse-adjusting knob (16) has a surface on which the shafts (72, 74) are supported. A pair of springs (90, 104) effects adaptation to torsion and play. Direct rotation of the coarse-adjusting spindle (18) is performed by rotating the coarse-adjusting knob (16). The friction wheels (68, 70) are turned like planets by turning the fine-adjusting knob (20). The shafts (72, 74) turn the coarse-adjusting spindle (18) in a manner proportional to the rotation of the fine-adjusting knob (20). <IMAGE>
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