Technicomp A Division of Excel Partnership, Inc.

www.xlp.com

1-800-374-3818

Basic Measuring Tools

1. The term resolution refers to:

a. the ability of a user to obtain accurate measurement readings.

b. the range of dimensions for which a gage is applicable.

c. the degree of accuracy of a gage or measuring device.

d. the smallest unit of measure that can be directly read from a gage or measuring device.

2. The term accuracy means:

a. the proper gage selection for the part feature to be measured.

b. the degree to which the reading shown on a gage agrees with the actual value of a known standard.

c. the smallest unit of measure that can be read directly from the measuring device.

d. the degree to which repeated measurement readings of the same part feature agree with each other.

3. To produce an accurate measurement, the maximum gaging pressure should be applied to the part feature.

True

False

4. If the measured point on a part feature falls between graduations of the steel rule used to measure it, you should:

a. estimate the reading.

b. record the two graduations that a feature falls within.

c. use a rule or other gage that has finer discrimination.

Technicomp A Division of Excel Partnership, Inc.

www.xlp.com

1-800-374-3818

5. The function of a vernier scale on a vernier caliper is to:

a. extend the useful life of the gage.

b. keep track of its calibration schedule.

c. subdivide the smallest graduation of the corresponding scale on the calipers fixed bar.

d. restrict the size of the jaw opening when measuring smaller dimensions.

6. When measuring a dimension with direct-reading calipers, you should try to use the full depth of the jaws whenever possible.

True

False

7. When taking a measurement with an outside micrometer, the anvil is positioned at:

a. the measured surface of the part feature.

b. the centerline of the part feature.

c. the reference surface of the part feature.

d. the parallel surface of the part feature.

8. The component of a micrometer that helps to ensure proper gaging pressure is called the:

a. sleeve or barrel.

b. spindle.

c. thimble or ratchet.

d. anvil.

9. A balanced dial indicator can show positive and negative measurement readings.

True

False

Technicomp A Division of Excel Partnership, Inc.

www.xlp.com

1-800-374-3818

10. The purpose of a revolution counter on a continuous dial indicator is to:

a. record the number of measurements taken with the gage.

b. eliminate the need for recalibrating the gage.

c. show dimensions that are greater than one complete sweep of the indicating needle.

d. allow the gage to be used for inside and outside dimensions.

11. A dial snap gage, which indicates how much a part feature varies from its nominal size, either positively or negatively, has a continuous dial indicator.

True

False

12. When using a dial caliper, the readings from the fixed bar scale and the dial indicator are added to find the total measurement.

True

False

13. Fixed gages allow you to make a simple go or no go decision about whether or not a part feature is within an acceptable range of dimensions.

True

False

14. The type of fixed gage thats most appropriate for inspecting holes, inside diameters or slots is a:

a. thread ring gage.

b. plug gage.

c. snap gage.

d. ring gage.

15. The outer calipers on a snap gage represent:

a. the go dimension for the part feature being inspected.

b. the no go dimension for the part feature being inspected.

c. the nominal, or ideal, dimension for the part feature being inspected.

Technicomp A Division of Excel Partnership, Inc.

www.xlp.com

1-800-374-3818

16. The go dimension for a part feature is represented on a plug gage or pair of plug gages by the smaller-diameter gage pin.

True

False

17. If youre evaluating an external thread with a pair of thread ring gages and both rings screw onto the entire length of the thread, the thread is considered acceptable.

True

False

18. The primary purpose of a surface plate is to:

a. reduce the risk of damaging gages during inspections.

b. allow for faster inspections of part features.

c. prevent measurement inaccuracy due to incorrect gaging pressure.

d. establish a common reference plane for the gage and the part feature that youre inspecting.

19. The purpose of gage blocks is to:

a. position and secure workpieces for surface plate inspection.

b. provide a reference plane for a part feature and the gage used to inspect it.

c. create a standard against which the measurement of a part feature can be compared.

d. adjust the height of a gage as needed for a particular inspection.

20. When stacking gage blocks to a desired dimension, you must take into account the space between the individual blocks.

True

False

(See following page for answers.)

Technicomp A Division of Excel Partnership, Inc.

www.xlp.com

1-800-374-3818

1. d.

2. b.

3. False

4. c.

5. c.

6. True

7. c.

8. c.

9. True

10. c.

11. False

12. True

13. True

14. b.

15. a.

16. True

17. False

18. d.

19. c.

20. False