ALTRACO VERNIER CALIPER Manual de usuario descargar pdf (Pagina 14)

be the same as the length of standard rod when the micrometer

‘measures’ the rod. For example, when 5607 (25-50mm) ‘measures’

its standard rod 25mm, the reading must be 25mm exactly.

Otherwise you should adjust the micrometer. Put the small point of

the adjusting wrench into the small hole on the sleeve which is near

the locking lever, rotate the sleeve to make the zero line of the

thimble align with the horizontal line of the sleeve. Another end of

the adjusting wrench is used to fix or unfix the ratchet stop.

4. How to measure:

Let the anvil contact with the workpeice first. Rotate the thimble or

the ratchet stop till the spindle is close to (but not in contact with)

the workpeice. Rotate the ratchet stop until you hear a click from the

ratchet stop.

5. Locking lever:

Tighten this lever to lock the reading when you have to remove the

micrometer before reading.

6. How to read

Example 1

A: 35

B: 0.12

----------

C: 35.12mm

Example 2

A: 42.5

B: 0.148 (8 is estimated)

------------

C: 42.648mm

A is the line of the sleeve which is on the left of the thimble.

B is the point on the thimble which aligns with the horizontal line on sleeve.

C is the reading

The graduation on the sleeve is 0.5mm. One rotation of the thimble makes

0.5mm (1 graduation) step on the sleeve.

7. Precaution for measurement:

e 13

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ALTRACO VERNIER CALIPER Manual de usuario Pagina 14