8.1

What does the term one thou stand for?

• A thousand inches

• 1/1000 of an inch or 0.001

• 100/1000 of an inch

• Ten thousand inches

On a standard scale or inspection tool each line is called a....

• Graduation

• Segment

• Line

• Measurement

When the drawing of a part is the same actual size as the part the scale is....

• 1:1

• 1:4

• 1:10

• 1:2

When using a vernier caliper it is important to clean the measuring faces prior to use.

• True

• False

One of the most versatile pieces of inspection equipment to a machinist is.....

• A vernier caliper

• Calibrated scale

• A rag in your back pocket

• A piece of string with knots tied every inch

When using calipers to measure an outside diameter you should remember to....

• Not push to hard and place the part deep into the jaws

• Measure with the tail of the caliper

• Do not use calipers

• Stand shoulder width apart

When using the tail of a caliper to measure the depth of a feature it is important to watch the corner radii as this could throw off your measurement...

• True

• False

Calipers measure the inside of holes except when

• The hole is a blind hole

• the hole is smaller than 0.125

• The hole is a counterbore

• your mum says its wrong

what is the number one cause of errors when measuring with micrometers?

• Gorilla grip and over-tightening

• Dirt on the measuring faces

• Using it on the wrong place

• Using them like a pair of pliers

For inch micrometers, the main graduations on the sleeve are

• 0.01

• 0000004

• 100, 200, 300 etc

• 1 Inch