Presentation on theme: "Measurement Systems & Industrial Applications"— Presentation transcript:
1 Measurement Systems & Industrial Applications Industrial SkillsMeasurement Systems &Industrial Applications
2 Measurement Systems The English System (Customary System) The basic unit of linear measure is the inch.Two ways to subdivide the inchCommon FractionsDivide the inch into 2, 4, 8, 16, 32 and 64 parts.Fractions written as 1/2”, 1/4”, 1/8”, 1/16”, 1/32” & 1/64”Decimal FractionsDivide the inch into 10, 100 and 1,000 parts.Fractions written as 0.10”, 0.01” and 0.001”Area measurements utilize linear measurements that have been squared. (Length x Width)Solid volume measurements utilize linear measurements that have been cubed. (L x W x Height)
3 Measurement Systems The Metric System (International System) The basic unit of linear measure is the meter.The meter is divided into smaller parts to provide a system of precision measurement.Based on a decimal system (powers of ten).Calculations and communication simplified by using a standardized set of prefixes or divisions.Milli = = 1 millimeterCenti = = 1 centimeterDeci = = 1 decimeterMeter = = 1 MeterKilo = = 1 Kilometer = MetersArea measurements utilize linear measurements that have been squared.Solid volume measurements utilize linear measurements that have been cubed.
4 Always indicate the unit of measurement when writing or discussing measurements. 12 inches = 1 foot feet = 1 yardInch(es) abbreviated as in. or “.Foot (Feet) abbreviated as ft. or ‘.Yard(s) abbreviated as yd.Mile(s) not abbreviated.1 Statute Mile = 5,280 feet1000 mm = 100 cm = 10 dm = 1 MMillimeter(s) abbreviated as mm.Centimeter(s) abbreviated as cm.Decimeter(s) abbreviated as dm.Meter(s) abbreviated as m or M.Kilometer(s) abbreviated as Km1 Kilometer = Meters
5 Conversions English to Metric Metric to English 1 inch = 25.4 mm or cm1 fluid ounce = liter1 U.S. Gallon = liters1 pound (16 ounces) = gramsor kilogramsMetric to English1 meter = ft.or inches1 liter = gallonor fluid ounces1 gram = ounces1 kilogram = pounds
6 Industrial Applications: Reading a Customary Rule A common fractional scale divided into one-sixteenth-of-an-inch increments.Zero is the starting point – the point where there is no length.
7 Customary Rule: Continued Common fractions do not necessarily provide a great deal of accuracy.More accuracy may be obtained by using a rule divided into one-thirty-second- or one-sixty-fourth-of-an-inch increments.The decimal fraction system provides more accuracy than the common fraction.
8 Customary Rule: Continued A decimal fraction scale is divided into one-tenth and one-hundredth-of-an-inch increments.Decimal fractions divide the inch into 10, 100 and 1,000 parts.These fractions are always written or stated as decimals:0.10” ” ”
9 Industrial Applications: Reading a Metric Rule A metric scale divided into one millimeter increments is shown to the left.Some metric scales – such as the one shown above (lower scale) may be marked in 0.5 mm increments.
10 Calculations: Area A Two-Dimensional Quantity Area measurements utilize linear measurements to calculate the number of unit squares within a given boundary.Measurements of area are expressed in “square units” such as square inches, square feet, square meters, etc.They have length and width but thickness is not considered in the calculations.Never mix units in the same calculation.
11 Calculations: Volume A Three-Dimensional Quantity Volume is the space an object occupies or the capacity of a container. Volume calculations combine three measurements: usually length, height, and depth or thickness.Volume is always expressed in “cubic units” such as cubic inches, cubic feet, cubic meters, etc.A variety of different volume formulas may be used, depending on the shape of the object.Check your handout for exact formulas.Never mix units in the same calculation.
13 Industrial Applications: Common Quantities and Conversions 1 square centimeter = 100 square millimeters1 square meter =10,000 sq.cm.=1,000,000 sq.mm1 cubic meter = 1,000,000,000 cubic millimeters1 cubic meter = 1,000 liters of water*1 cubic meter = gallons of water*1 liter of water = Kilogram*
14 MSC 124 Industrial Skills Introductory Exercise: Printer Paper MeasurementsMeasurements vs Conversions
15 A.Using the ruler given to you, measure the distances indicated. Use what you think is an appropriate measurement system.B.C.D.Estimate the square footage of the piece of paper you are using.
16 A.=mm (21mm or 2.1cm)13/16 inch13 ÷ 16 = inches1 inch = 25.4mm.8125 inches x 25.4mm = mmB.=½ inch(12.5mm or 1.25cm)1 ÷ 2 = .5 inches.5 inches x 25.4mm = 12.7mmC.=3/16 inch4.7625mm (5mm or .5cm)3 ÷ 16 = inches.1875 inches x 25.4mm = mmD.=13 5/8 inches346mm (34.6cm)5 ÷ 8 = .625 inches + 13 inches = inchesinches x 25.4mm = mm11” x ” = square inches ÷ 144 sq. in. = square feet