THREE POINT INTERNAL MICROMETER
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1
Measuring head
7
Extension Rod
2
Inside sleeve
8
Spanner
3
Adjusting Screw
9
Setting Ring
4
Fastness Sleeve
10
Screwdriver
5 Thimble
11
The first set Interchangeable
12
The second set Interchangeable
MICROMETER
OPERATION MANUAL
SPI20G02
IMPORTANT NOTICE
• Clean all spindle and body prior to use.
• Clean the battery before installation.
• Zero set the indicators after installing
the battery.
Specifications
• Graduation：Inch: .0001"
Metric: 0.001mm
• Carbide tipped measuring faces
• Ratchet Stop.
• Models Up to and including 6mm or .24 inch have two
measuring points and models 7mm or .275 inch and above
are with three measuring points.
Zero setting
Clean the measuring jaws and the hole of the setting ring
with soft cloth. Rotate ratchet stop until the measuring jaws
contact the hole of the setting ring
Repeat the above process until indicator value is identical with
the setting ring.
Remark: Need to zero setting again after install or remove
extension rod.
Method of Reading
• Metric
The standard micrometer with the vernier scale on the sleeve
can be read to 0.001mm. In reading of vernier scale, find which
graduation of the vernier scale coincides with that of the
thimble and multiply it by 0.001mm.
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