contact micrometer
21Milling cutter — Milling cutters are cutting tools typically used in milling machines or machining centres (and occasionally in other machine tools). They remove material by their movement within the machine (e.g., a ball nose mill) or directly from the cutter s… …
22Spherometer — A spherometer is an instrument for the precise measurement of the radius of a sphere. Originally, these instruments were primarily used by opticians to measure the curvature of the surface of a lens.The usual form consists of a fine screw moving… …
23Dimensional metrology — is the science of calibrating and using physical measurement equipment to quantify the physical size of or distance from any given object. Inspection is a critical step in product development and quality control. Dimensional Metrology requires… …
24Nanomaterials — Part of a series of articles on Nanomaterials Fullerenes …
25Diamond turning — Diamond flycutting Diamond turning is a process of mechanical machining of precision elements using lathes or derivative machine tools (e.g., turn mills, rotary transfers) equipped with natural or synthetic diamond tipped tool bits. The term… …
26Dial indicator — Dial indicators, also known as dial gauges and probe indicators, are instruments used to accurately measure small linear distances, and are frequently used in industrial and mechanical processes. They are named so because the measurement results… …
27Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
28Forging — This article is about the metalworking process. For specific hot forging hearth, see forge. For the act of counterfeiting, see forgery. Hot metal ingot being loaded into a hammer forge Forging is a manufacturing process involving the shaping of… …
29Nail gun — Pneumatic nail gun in use A nail gun, nailgun or nailer is a type of tool used to drive nails into wood or some other kind of material. It is usually driven by electromagnetism, compressed air (pneumatic), highly flammable gases such as butane or …
30Solar cell — A solar cell made from a monocrystalline silicon wafer …
