| 1. |
Read the
number on the sleeve ( 0._) These numbers are in
tenths of an inch. |
| 2. |
The minor
(small) divisions on the sleeve are each 25 thousandths of an inch
(0.025). Count the number of small divisions ___
x 0.025 = 0.___
(
possibilities: 0 or .025 or .050 or .075)
Do
not read between the lines on the sleeve. Read only the last
division on the sleeve left exposed by the thimble. |
| 3. |
The thimble has
divisions from 0 to .025 inches, with each line representing 1
thousandth of an inch (0.001). Read the thimble
where the centerline of the sleeve falls. (the one that
lines up with the plain horizontal line) 0.0_ _ |
| 4. |
The fourth
decimal place in ten-thousandths of an inch (0.0001") is
obtained by reading the vernier lines on the sleeve. One of
the lines on the thimble will align with one of the vernier lines
on the upper portion of the sleeve. Look
for the lines that match up the best. 0.000_
Reading
the vernier portion involves some judgment on the part of the
reader. The first three decimal places are accurate
readings, with the fourth place being more difficult to read
accurately. |
| 5. |
Add the reading
on the thimble to the reading on the sleeve. |
Warning!!
- Turn the thimble
gently. Do NOT over tighten!
