SLEEVE

1
SLEEVE
SPINDLE
ANVIL
THIMBLE
2
SLEEVE (ONE INCH IS DIVIDED INTO 40 EQUAL
DIVISIONS, EACH OF WHICH EQUALS 1/40 IN(O.O25 IN)
EVERY FOURTH LINE IS LONGER THAN THE OTHERS,
WHICH INDICATES 0.100 IN DISTANCE)
THIMBLE ( DIVIDED INTO 25 EQUAL DIVISIONS
. ONE DIVISION EQUALS 1/25 OF 0.025 IN OR 0.001
IN. )
INCH MICROMETER
3
INCH MICROMETER
SLEEVE
THIMBLE
0.001
0.025
0.100
4
TO READ AN INCH MICROMETER 1. Note the last
number showing on the sleeeve. Multiply it by
0.100. 2. Note the number of small lines visible
to the right of the last number shown. Multiply
it by 0.025. 3. Add the number of divisions on
the thimble from zero to the line that coincides
with the index line on the sleeve. 4. Add steps 1
through 3 to get the total reading.
SLEEVE
THIMBLE
0.001
0.025
0.100
5
2 is shown on the sleeve. 2 x 0.100
0.200 3 lines are visible past the number 3 x
0.025 0.075 13 line on thimble coincides
with the index line .. 13 x 0.001
0.013 Total Reading . 0.288
SLEEVE
THIMBLE
0.001
0.025
0.100
6
TO READ AN INCH VERNIER MICROMETER 1. Note the
last number showing on the sleeeve. Multiply it
by 0.100. 2. Note the number of small lines
visible to the right of the last number shown.
Multiply it by 0.025. 3. Add the number of
divisions on the thimble from zero to the line
that coincides with the index line on the
sleeve. 4. Note the line on the vernier scale
that coincides with a line on the thimble. This
line indicates the number of ten-thousandths
(0.0001) 5. Add steps 1 through 4 to get the
total reading.
0.0001
7
2 is shown on the sleeve.
2 x 0.100 0.200 1 line is visible past the
number 1 x 0.025 0.025 11 line
on thimble just past thes index line ..
11 x 0.001 0.011 3 line on the vernier
scale coincides with a line ( 17) on the
thimble 3 x 0.0001 0.0003
0.200
0.025
0.011
0.0003 Total Reading .
0.2363
0.0001
8
VERNIER CALIPER
9
The large 1 on the bar
1.000 The small 4 4 x
0.100 0.400
One line is visible past the 4 1 x 0.025
0.025 The 11th line of the vernier
scale coincides with a line on the bar 11 x
0.001 0.011 Total reading
1.436
in
A 25 division VERNIER CALIPER
10
A 50 division VERNIER CALIPER
The large 1 on the bar
1.000 The small 4 4 x
0.100 0.400
One line is visible past the 4 1 x 0.050
0.050 The 14th line of the vernier
scale coincides with a line on the bar 14 x
0.001 0.014 Total reading
1.464
in
11
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