"Here they are again," Harry said, pointing with the tip of his percussion hammer.

It was fired by a percussion hammer, and Kirk could see no means for semiautomatic operation.

He or she will also check your nervous system reflexes with a slight tap of a special instrument (percussion hammer).

Susan found a percussion hammer for tendon reflexes.

However, this proved to be cumbersome, as the weight of the chest percussion hammer was insufficient to generate an adequate stimulus for a reflex.

A breaker is a powerful percussion hammer fitted to an excavator for demolishing concrete structures or rocks.

Such material typically requires pre-blasting or use of percussion hammers or chisels to facilitate excavation.

Some Hand Tools The last category is electrical power hand tools, including rotary drills, percussion hammers and grinders, sanders and polishers.

The products are half-inch and larger rotary drills, electropneumatic rotary and percussion hammers, and grinders, sanders and polishers, with some exceptions.

Between 1807 to 1810, Lepage invented a new way to fire portative firearms, by using the mercury fulminate priming medium to be fired by the blow of a percussion hammer.

Doheny brought in a sharpened eucalyptus log and used it as an improvised percussion hammer to deepen the well, and shortly afterwards they punctured an oil reservoir, and began producing about seven barrels a day.