PRECISION INSTRUMENTS EXPLAINED - PowerPoint PPT Presentation

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PRECISION INSTRUMENTS EXPLAINED

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... .001 .001 TENTHS THOUSANDS HUNDREDS MICROMETER PARTS Divisions Reading a Micrometer Observe the greatest 0.100 ... DEPTH GAGE ... – PowerPoint PPT presentation

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Title: PRECISION INSTRUMENTS EXPLAINED


1
PRECISION INSTRUMENTS EXPLAINED
  • MICROMETERS
  • CALIPERS
  • GAGE BLOCKS

2
HOW PRECISE DO I NEED TO BE ?WE NEED TO BE ABLE
TO ACCURATELY MEASURE PARTS TO 1/1000 OF AN INCH
OR AS A DECIMAL - .001
  • .001
  • TENTHS
    THOUSANDS
  • HUNDREDS

3
(No Transcript)
4
MICROMETER PARTS
5
Divisions
0.001 Division
Barrel Scale
Thimble Scale
0.025 Division
0.100 Division
6
Reading a Micrometer
  • Observe the greatest 0.100-inch division on the
    barrel scale.
  • Observe the number of 0.025-inch divisions on the
    barrel scale.
  • Add the thimble scale reading (0.001-inch
    division) that coincides with the horizontal line
    on the barrel scale.

7
  • Observe the greatest 0.100-inch division on the
    barrel scale. (three 0.100 0.300)

8
  • Observe the number of 0.025-inch divisions
    between the 0.300-inch mark and the thimble. (two
    x 0.025 0.050)

9
  • Add the thimble scale reading that coincides with
    the horizontal line on the barrel scale. (eight
    0.001 0.008)

10
TYPES OF CALIPERS
  • VENIER
  • DIAL
  • DIGITAL

11
OUTSIDE MEASURING JAWS BAR SCALE
  • PARTS OF A CALIPER
  • INSIDE MEASUREING JAWS
  • DIAL .001
    DEPTH GAGE

12
Divisions
0.100
1.000
0.010
0.001
13
Reading Calipers
  • Observe the greatest 1.000 division

14
  • Observe the greatest 0.100 (0.100 0.600)

1.000 0.600
0.600
15
  • Observe the greatest 0.010 (0.010 0.000)

0.000
1.000 0.600 0.000
16
  • Observe the greatest 0.001 (0.001 0.005)

1.000 0.600 0.000 0.005

1.605
17
GAGE BLOCKS AREVERY ACCURATE MEASURING STANDARDS
TO 1\1,000,000 IN.
18
FIVE INDIVUAL GAGE BLOCKS FROM SET
19
RINGING TWO BLOCKS TOGETHER SO THEY ATTACH
20
GAGE BLOCKS RUNG TOGETHER TO GIVE AN ACCURATE SIZE
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