The calipers are all four-pot, opposed piston types, and are made of aluminium.

The first successful drills were the piston type, or "reciprocators."

Shock absorbers were now hydraulic and of the double acting piston type.

Diaphragm ballvalves were developed to overcome the noise of ordinary piston types.

The mechanism inside the first stage can be of the diaphragm type or the piston type.

Diaphragm-type first stages are more complex and have more components than the piston type.

Another is to use a separate gas generator, which may be of either rotary or piston type.

These engines are mainly of the dual piston type, giving a compact unit with high power-to-weight ratio.

With translational (piston type) microscanners a mechanical stroke of up to approx.