They consist of two adjustable arms with rubber pads on, which must first be fitted to the screen itself.

It consists of three arms connected to universal joints at the base.

Adaptations for later tanks consisted of two lighter arms.

The Oberaletsch Glacier system consists of two approximately equal arms.

Most Orbiters consist of six arms, and have three cars for each arm with up to two people sitting in each car.

A fixed-arm carousel consists of 3 fixed arms that must move together.

The contraption consisted of two large hydraulic arms that were to be fitted on the front and back of a vehicle.

A Troika consists of three arms radiating from a central column.

Calipers consist of two parallel arms one of which is fixed and the other able to slide along a scale.

Wave Rider - ride consisting of fourteen arms with one car on each arm.