I need a report on linear measuring instrumentsand give exam

Solution

Linear Measuring instruments are broadly classified into two types

Direct (contact) measurement

Rules - these are scales with graduations on each side

Vernier Calipers - More precise tools capable of measuring external and internal dimensions as well as depths.Some times comes with a dial indicator for precise reading. Steps to record a measurement are as follows

Vernier Height Ga(u)ges - Designed for use in toolrooms, workshops, inspection departments in order to measure and/or mark off vertical and locating center distances. Similarily for measure depths of holes, slots, recesses, and so on, there are depth gauges.

Micrometers

Protractors

Dial Indicators

Cali pers - Standard calipers have a fine adjustment screw and a quick-adjusting spring nut. Accuracy obtained with these tools depends mostly on the inherent skill of users. The measurements are carefully transferred to a graduated measuring tool.

Gauges and Ga(u)ge Blocks

Special-purpose tools