MEASUREMENT. MEASURING TOOLS RULER DIAL CALIPER VERNIER CALIPER OUTSIDE MICROMETER DEPTH MICROMETER...
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Transcript of MEASUREMENT. MEASURING TOOLS RULER DIAL CALIPER VERNIER CALIPER OUTSIDE MICROMETER DEPTH MICROMETER...
MEASUREMENT
MEASURING TOOLS• RULER• DIAL CALIPER• VERNIER CALIPER• OUTSIDE MICROMETER• DEPTH MICROMETER• INSIDE MICROMETER• INDIRECT MEASUREMENT• HEIGHT GUAGE• INIDICATORS
Systems of Measurement
• US Conventional System- inches, feet, yards• Fractional Notation• Decimal Notation• Reading a Ruler (review page 70 Modern Metalworking)
• International System of Units (SI)- SI metric • Millimeters/ Half millimeters• Reading a Ruler (review page 71 Modern Metalworking)
Ruler
• Graduations
• Fractional Inch (1/8”-1/64”)
• Decimal Inch (10th, 20th, 50th)
• Metric (millimeters and half millimeters)
Combination Square
Dial Calipers
Bezal Lock, Caliper Dial, Clamp Screw, Fixed Jaw, Scale Beam, Movable Jaw, Inside Nib.
How to Read a Caliper
Vernier Calipers
• More accurate than dial calipers
Vernier Measurement Review
Outside Micrometer
Reading a Micrometer
Depth Measurement
• Used to accurately measure the depth of a hole or bore.
Depth Measurement
Inside Micrometer
• Used to accurately measure bores or hole diameter
Inside Micrometer
Indirect Measurement
Height Gage • Types
• Digital, Dial, or Vernier
• Supported by Surface Plates and Machine Tables
Indicators• Used for “quick checking” parts and machine setups• Types
• Balanced- can be read in both directions from the “0” line
• Continuous- read clockwise from “0” line• Digital
Using an Indicator
Test Your Knowledge
• What is the graduation of this ruler?• When is a magnifying glass needed? • Why should you begin readings at the 1”? • Identify the highlighted marks.
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