The perforation of the paper when done by hand is usually performed by means of small mallets, but at the central telegraph office in London, and at other large offices, the keys are only used for opening air-valves, the actual punching being done by pneumatic pressure.
We need some mini mallets in the future for Juniors.
The soft percussion mallets are the low rumbles of winds echoing across the still night.
The 4 hardwood mallets are 32.5 " long with smaller sized heads.
It was carried off in carts to open spaces, where an exposure of some weeks to the air was found to pulverize the hard rock far more efficiently than the old method of crushing with mallets.
