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Published byOsborne Hubbard Modified over 9 years ago
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Measurement and Tools Understanding Measurement and Tools
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Measurement The process of determining the size, amount or extent of something
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Rules and Scales measure length, width and thickness standard 12 inch rule mechanical rule/scale drafter’s rule/scale architect rule/scale machinist’s rule/scale metric rule yard stick meter stick tape measure
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Calipers Measure diameters and length on either the inside or outside of an object
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Micrometer Very precise tools for measuring the length, thickness or diameter of small objects.
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Squares Measure or Lay out Perpendicular Lines (lines at 90 degree angles) T-Square try square framing square combination square center square
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Protractors Measure angles from 0 to 180 degrees Measure length along their straight edge
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Weight Scales weight scales sensitive scientific scales analog/digital, manual or electronic Measure weight or mass
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Calibrated Containers measure volume measure ingredients for recipes measuring spoons, measuring cups scientists use lab beakers
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Precision ~vs~Standard Precision measurements are precise and exact such as in eyeglasses, computer parts, medicine Standard measurements have some degree of inaccuracy such as plywood, shoe sizes, table heights
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Temperature Fahrenheit freezing point of water = 32 degrees boiling point of water = 212 degrees 180 degrees between boiling/freezing
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Temperature Celsius freezing point of water = 0 degrees boiling point of water = 100 degrees 100 degrees between boiling/freezing
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United States Customary System Length in inches Weight by pound Volume by the quart Temperature in degrees Fahrenheit
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Metric Base Units Length = meter Weight = gram Volume = liter Temperature = Celsius
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US Measure for Length 12 inches=1 foot 3 feet = 1 yard 1,760 yards = 1 mile 5,280 feet = 1 mile
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Metric Length Base unit is the meter 1000 millimeters = 1 meter 100 centimeters = 1 meter 1 kilometer = 1000 meters
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US Measure for Volume 8 ounces = 1 cup 2 cups = 1 pint (16ounces) 2 pints = 1 quart (32 ounces) 4 quarts = 1 gallon (128 ounces)
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Metric Volume Base unit is the liter 1000 cubic centiliters = 1 liter 1000 milliliter = 1 liter
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US Measures for Weight 16 ounces = 1 pound 2,000 pounds = 1 ton
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Metric Weight Base unit is the gram 1 kilogram = 1000 grams 1 metric ton = 1000 kilograms
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Metric Prefixes “There is a logical progression from smaller units to larger ones, since all sizes of units are based on ten.” (R3 p.119) Technology Systems
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Metric Measurement Prefixes kilo = x 1000 hecto = x 100 deka = x 10 deci = x.1 centi = x.01 milli = x.001
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