Measurement Tools (3)

Question 1

Calibration Blocks

Answer 1

Blocks whose dimensions trace back to the nationally held standard. Used to Calibrate measuring tools.

Question 2

Gauge Blocks

Answer 2

Precision-sized metal blocks used to check the accuracy of a measuring tools reading.

Question 3

Considerations when choosing a Measuring Tool:

Answer 3

• Geometric
• Quantity
• Desired, Accuracy, Precision, and Resolution
• Units
• How to properly use the tool

Question 4

Calipers

Answer 4

• Vernier
• Dial
• Digital
• Measure thickness

Question 5

Micrometers

Answer 5

Measure thickness

Question 6

Dial Indicators

Answer 6

Measure depth

Question 7

Surface Comparators

Answer 7

Measure roughness of a surface

Question 8

Weld Profile Gauges

Answer 8

Used to check the shape of weld buildup.

• V-Wac
• Brim Cam

Question 9

V-Wac Gauge

Answer 9

Measures:

• depths, grooves, pits
• height of protrusions
• porosity size (using porosity comparator)

Question 10

Brim Cam Gauge

Answer 10

Everything that a V-Wac can do - Porosity
+ fillet welds, throat and length
+ bevel angles
+ planar alignment of welded joints

Question 11

Weld Fillet Gauge

Answer 11

Used to determine if the leg and throat of Fillet welds are acceptable.

Question 12

Datum

Answer 12

A landmark on an object used to help refer to the location of a defect.