MEASURING AND REPAIR INSTRUMENTS

You, as an Engineman, must he able to identify the basic measuring and repair instruments and the basic components of these instruments. This chapter will help you to recognize the how and when to use and maintain basic measuring and repair instruments and engine test equipment.

Measuring instruments are used to check tolerances and specifications during inspections and repairs of internal combustion engines and auxiliary equipment. You, as an Engineman, need measuring instruments to determine what parts are worn and need to be repaired or replaced. The following measuring and repair instruments are discussed in this chapter: dial indicator, dial/vernier caliper, micrometer, snap gauge, bore gauge, strain gauge, borescope, stroboscope, torque wrench, multiplier, adapter, ridge reamer, cylinder hone, and dynamometer.

SENSITIVE MEASURING TOOLS

Sensitive measuring tools are measuring devices that provide measurement readings to a thousandth of an inch or less. The more common sensitive measuring tools you will use are the dial indicator, dial/vernier caliper, micrometer, snap gauge, bore gauge, and strain gauge.