Identify tools used for direct and indirect measurements, explain why it’s important to keep measuring devices square/plumb with a workpiece, identify the precision measurement instruments used to transfer measurements, and explain the structure of a vernier scale.
Describe the different types of calipers, describe the procedure for measuring inner and outer diameters and depth using a vernier caliper, and describe how to take measurements using dial and digital calipers.
Describe the function of a micrometer, recognize the different types and components of micrometers, and recall the procedure for calibrating precision micrometers. also recall the procedure for taking outside measurements with outside micrometers and describe the care and adjustments needed for continuous use of a micrometer.
Recall the functions and components of inside micrometers, telescoping gauges, and small-hole gauges. also recall the maintenance procedure for a telescoping gauges, and recall the procedures for measuring with inside micrometers, telescoping gauges, and small-hole gauges.
Identify different types of micrometers and when to use them, differentiate between a depth rule and vernier caliper, measure the depth of an object using a depth micrometer, and measure the depth of an object using a depth rule.
Explain the methods used to determine the pitch of a screw thread; recall the procedure for measuring thread distance using a screw pitch gauge; describe the go/no-go gauge, round plug gauge, and thread plug gauge; and recall the procedure for measuring with a go/no-go gauge.
Recall the uses and range of a thickness gauge, recall the procedure for measuring with a thickness gauge, and explain how to measure with a wire and sheet metal gauge. also recall the applications of taper gauges and describe how to measure a tapered angle or a groove using taper gauges.
Describe what a dial indicator is and what it’s used for; take measurements with dial indicators; explain what a total indicator reading, or TIR, is and how it is used with reference to shaft alignment; and describe how to check concentricity and why it is Important.
List the types of protractors, differentiate between a basic and a bevel protractor, recall how to measure an angle using a basic protractor, and recall the procedure for measuring with a digital protractor. also recall the various components of a radius gauge and identify how to use different radius gauges.
Describe what optical measurement devices are and how they work, recall common categories of optical measurement devices, and identify the advantages of optical measurement devices over other common precision measurement devices.