toothed+wheels
121Friction wheel — Friction Fric tion, n. [L. frictio, fr. fricare, frictum,to rub: cf. F. friction. See {Fray} to rub, arid cf. {Dentifrice}.] 1. The act of rubbing the surface of one body against that of another; attrition; in hygiene, the act of rubbing the body …
122sawing machine — Machine tool for cutting up bars of material or for cutting out shapes in plates of raw material. The cutting tools (saws) may be thin metallic disks with teeth on their edges, thin metal blades or flexible bands with teeth on one edge, or thin… …
123Yi Xing — (zh cpw|c=一行|p=Yī Xíng|w=I Hsing, 683–727), born Zhang Sui (张遂), was a Chinese astronomer, mathematician, mechanical engineer, and Buddhist monk of the Tang Dynasty (618 ndash;907). His astronomical celestial globe was the first to feature a… …
124Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …
125Land Rover — Infobox Company company name = Land Rover company company type = Subsidiary foundation = 1948 as a marque of the Rover Company. 1978 Land Rover Limited company established …
126Tachometer — A tachometer is an instrument that measures the rotation speed of a shaft or disk, as in a motor or other machine. The device usually displays the revolutions per minute (RPM) on a calibrated analog dial, but digital displays are increasingly… …
127Gear ratio — The gear ratio is the relationship between the number of teeth on two gears that are meshed or two sprockets connected with a common roller chain, or the circumferences of two pulleys connected with a drive belt. General description In the… …
128Fiat 124 Coupé — Infobox Automobile Fiat 124 Coupé 1800 1972 name = Fiat 124 Coupe aka = manufacturer = Fiat parent company = production = 1967 1975 predecessor = successor = class = platform = body style = 2 door Coupe layout = FR layout engine = straight 4 1438 …
