It consists essentially of a spring fastened at the top to a movable arm.

The Hansen lamp has a plain, sloping shade and a movable arm on a bracket.

A sleek, seal-like body emerged from the water in front of Ataka and began to gesticulate with its very movable arms.

The movable arm has a vernier scale which permits readings of 1/16th degree.

A halogen light bar located on a movable arm in front provides additional lighting.

Just above the chart was a movable arm carrying a pointer.

Uhura looked up quickly and pushed aside the reader on its movable arm.

Typically, the planet gears are mounted on a movable arm or carrier which itself may rotate relative to the sun gear.