PPE Fowler 52-224 Series Instructions

[1] Name and Function of Each Part

in.
0-1" .0001"
1. Frame 2. Spindle
4. Sleeve 5. Thimble
7. Clamp 8. Counter

[2] How to Read

Counter
0-1" .0001"

[3] Zero Point Adjustment

Digital Micrometer
Part Number: 52-224 series

Safety Precautions

To ensure operator safety, use this instrument in conformance with the direc-
tions and specifications given in this User's Manual.
CAUTION
IMPORTANT
• Do not disassemble this instrument.
• Do not use and store this instrument at sites where the temperature will
change abruptly. Prior to use, thermally stabilize the instrument sufficiently
at a room temperature.
• Avoid storing this instrument in places where there is plenty of moisture
and dust, and using it at sites where it is directly subject to water or oil.
3. Anvil
• Do not apply excessive force to this instrument or drop it.
• Be sure to perform the zero point adjustment before measurement.
6. Ratchet stop
• After use, wipe off dust, cutting chips, and moisture from this instrument, then
apply rust-preventive oil to it.
9. Wrench
[1] Name and Function of Each Part
Thimble
[2] How to Read
[3] Zero Point Adjustment
IMPORTANT
• Be sure to use the dedicated gauge block for the zero point adjustment (all of
.0001" (Vernier)
these should be inspected periodically), the standard bar for micrometer, or
.001"
dedicated master gages for the workpiece to perform the zero point adjust-
.01"
ment of this instrument.
.1"
• Wipe off the measuring faces of the gage used and this instrument cleanly
1"
before performing the zero point adjustment.
• Perform the zero point adjustment in the same posture and conditions as the
measurement.
1) When the reading is correct on the counter and wrong on
the thimble
(1) If the deviation is less than 0.02mm:
(2) If the deviation is over 0.02mm:
The edge of the contact point of this instrument is sharp.
Handle it with great care to avoid injury.
See the figure on the left.
See the figure on the left.
Rotate the sleeve with the supplied wrench by the observed error as in
the case for conventional micrometers. (Fig. 1)
Remove the ratchet stop with the supplied wrench. Push the thimble
outward to disengage it from the spindle, then rotate it to zero position.
(Fig. 2)