focusing knob

This is different from two separate focusing knobs seen on low level microscopes.

As a result, rotating either of the focusing knobs will cause the other to rotate in the same direction.

As she adjusted the focusing knob, a wholly fantastic world jumped into view.

Come and look: here is the focusing knob.'

With a rapid adjustment of the focusing knobs a rainbow of color leapt into her vision, a whole world of crystalline beauty.

Balancing himself with one hand on the control console, he snapped on the electronic telescope with his other, resting his fingers on the focusing knob.

Unlike the Kodak, the Realist 45 has a top mounted focusing knob that moves the film plane in a fashion similar to the standard Realist.

When you rotate the fine focusing knob, the 3 balls are driven by input axle and rotate along the inner circumference of the case at slower speed.

The fine focusing knob connects to the input axle while the fast focusing knob connects to the holder shelf.

"The thing is," I said, squinting through the eyepiece as I twiddled the focusing knob, "those blood groups are to do with antibodies-little odd-shaped things on the surfaces of blood cells.

Later-model cameras featured a double exposure button which could be pulled out to make a double exposure but could otherwise be left alone as well as a depth of field scale on the focusing knob.

This is why, from bay windows in brownstones to penthouses so high that helicopters flutter beneath them, there are viewfinders being fiddled with, focusing knobs being twirled and powerful lenses peering deeply into unsuspecting people's eyes.

(Not only is the Kodak the only camera with diopter adjustment - a focusing knob on the eyepiece for people who wear glasses - but the first topic in its manual is: "Need This Guide in Larger Print?")