A planer is a type of metalworking machine tool that uses linear relative motion between the workpiece and a single-point cutting tool to cut the work piece.[1] A planer is similar to a shaper, but larger, and with workpiece moving, whereas in a shaper the cutting tool moves.
invented by John J. Loud
A ballpoint pen, also known as a biro (British English), ball pen (Philippine…
invented by Moritz Von Jacobi
Electrotyping (also galvanoplasty) is a chemical method for forming metal parts…
invented by Friedrich Koenig
A printing press is a mechanical device for applying pressure to an inked…
invented by Robert Stirling
A Stirling engine is a heat engine that is operated by the cyclic compression…
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