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The RuleOutside MicrometersEnglish Reading Micrometer
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accurate adjustable alloy annealed automatic back gear bearings bevel bolts boring caliper capstan carbon steel cast iron centre chuck clamped clearance cone copper countershaft cutter cutting angle cutting edge depth diametral pitch divide drill driving face plate feed finished fitted front furnace grinding hand wheel hardened headstock heat hole illustrated in Fig jaws Lathe Carriers lathe tools lead screw length lever Limit Gauge mandrel means measuring metal method micrometer mild steel millimetre milling cutters milling machine multiply necessary number of teeth number of threads obtained operation piece pinion pitch diameter position pulley ratio reamers revolutions per minute round screw threads screw-cutting shaft shape shown in Fig side slots spindle spiral square thread stops suitable surface tailstock taper temperature threads per inch tool-holder tooth Try Square turned turret lathe vernier vertical worm wrought iron