I have used and seen many pliers of all kinds. Never heard of that name before. In general all pliers are used to grip ,hold or cut things, each with a slightly different usage.
Mechanical pliers are pliers that are used in mechanical jobs, like fixing motor parts, auto parts, machines , etc.
A pulley or pliers
You can grip things tightly with them.
Snippers, electrical pliers, compression pliers and a multimeter.
Long nose pliers can hold things in awkward locations.
All technicians, electricians, plumbers and handymen use pliers almost every day.
Long nose pliers are for gripping things in small, awkward areas where fingers or standard pliers won't fit.
what are mechanical clocks
Pliers are a cheap and easily available tool. There are many different kinds,with different uses.
A power station generator uses mechanical energy produced by the steam turbine.
Long nose pliers can hold things in awkward locations.
An electro-mechanical computer is a computer that uses relays.