Yamaha MM700A Manual page 25

GENERAL INFORMATION
a. Place the standard gauge between the spindle and
anvil, and measure its outside diameter or length. If
the micrometer has a ratchet stop, use it to ensure
the proper amount of pressure is applied.
b. If the adjustment is correct. the 0 mark on the thim-
ble will align exactly with the 0 mark on the sleeve
line. If the marks do not align, the micrometer is out
of adjustment.
c. Follow the manufacturer's instructions to adjust the
micrometer.
Micrometer Care
Micrometers are precision instruments. Use and main-
tain them with great care.
Note the following:
Sleeve Thimble
15
Sleeve Thimble
VERNIER METRIC MICROMETER
Vernier scale
1. Reading on upper sleeve line
2. Reading on lower sleeve line
3. Thimble line coinciding with
sleeve line
Total reading
1. Store micrometers in protective cases or separate pad-
ded drawers in a toolbox.
2. When in storage, make sure the spindle and anvil faces
do not contact each other or another object. If they do,
temperature changes and corrosion may damage the con-
tact faces.
3. Do not clean a micrometer with compressed air. Dirt
forced into the tool causes wear.
4. Lubricate micrometers with WD-40 to prevent corro-
sion.
Telescoping and Small Bore Gauges
Use telescoping gauges (Figure 36) and small hole
gauges (Figure 37) to measure bores. Neither gauge has a
19
5.0 mm.
0.50 mm.
0.18
5.68