square the diameter of screw.
Probably their hammer-shaped head... The whole shead acts as one big sensor.
Hammers come in a wide variety of sizes. A small hammer could have a head that weighs one ounce, and a very large hammer could have a head that weighs five pounds (in a sledge hammer).
Its head is a hammer
it is the hammer head =D
No, a Hammer Head Shark is a fish
It's a shark with a hammer head!
A HAMMER head! A HAMMER head!
A 'ballpeen ' hammer is an engineering hammer with one flat head and one hemispherical head.
The ecosystem of the hammer head is the ocean sea
its hammer
A ball-peen hammer is a hammer with a flat head and an opposite, rounded - peening - head.
a hammer head shark is a shark that its Head looks like a hammer