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A ____________ instrument which measures to an accuracy of between 0,01 to 0,05 mm.A semi-accurate instrument is a measuring instrument that is used to transfer sizes or where the reading is not directly obtainedCorrectIncorrect
All measuring instruments should be handled carefully. Extra care must be taken with________________instruments, e.g. micrometers, dial test indicators and Vernier callipersCorrectIncorrect
The engineer’s square is commonly known as a “try square” and this latter name really describes its function. The square is applied to a work piece to “try” it for squareness.The square has a blade and a stock, both of which are hardened and ________________. All of the faces are precision ground.CorrectIncorrect
An engineer’s square is used in the following way
•Wipe the ________ areas of the square i.e. the stock and the blade and the surfaces of the work piece and table before measuring for squareness or marking off.CorrectIncorrect
The steel rule is the most commonly used ____________instrument in the workshop, and is used for most general measurements that do not require accuracy greater than 0,5 mm.CorrectIncorrect
Vernier callipers are available in different sizes, typically from_____________________.They are graduated in millimetre divisions and can measure accurately to 0,02 mm or 0,05 mm depending upon the type of Vernier scale usedCorrectIncorrect
An outside micrometer is used to measure accurately the outside diameters and dimensions of objects and work pieces.It is accurate to within___________. However, if it has a Vernier scale it can measure to within ±0,001 mm.Outside micrometers used for measuring diameters of 300 mm and larger, have a suggested accuracy of ±0,02 mmCorrectIncorrect
The depth micrometer is used to measure accurately the depth of steps, Slots, ______.It is accurate to within ±0,01 mm. However, if it has a Vernier scale it can measure to within ±0,001 mm.CorrectIncorrect
Dial test indicators have many uses in precision engineering such as checking the__________ and concentricity of shafts,setting up work pieces prior to marking off or machiningCorrectIncorrect
A thread angle gauge is used to check______ when grinding screw cutting tools, and to set the screw cutting tool square to the work piece.The thread angle gauge is also commonly referred to as a screw cutting gaugeCorrectIncorrect