Activity 1.3.3a Precision Measuring



Activity 1.3.3a Precision Measuring What is the difference between accuracy and precision?Precision is how close together or repeatable the results are, and accuracy is when or how close you get the measurement.List four tools used for measuring length precisely.Ruler, digital caliper, a micrometer, or a dial caliper.The dial caliper’s blade graduations are: in inches and tenths.The dial caliper’s dial graduations are: thousandths of an inch.One full revolution of the pointer on the dial equals: One hundred thousandths.5448300161290blade00blade3943350199390Clamp screw0Clamp screw2200275164465dial00dial314325199390Inside measuring faces00Inside measuring facesLabel the parts of the dial caliper below:40195502334895Fine adjustment screw00Fine adjustment screw22002752315845Dial adjustment screw00Dial adjustment screw6000762315845Outside measuring faces00Outside measuring facesRead each of the dial calipers below and write the measurement.49339505901690.4.44533900590169044407670059016901149339503910965.280.2845339003910965303407670039109652249339501729740.5000.504533900177673030034076700-118110o00o4933950-133350.8000.804105275173037520024533900-1250955005Use the dial calipers to measure the ten items your teacher provides. Complete the chart below with the name of the object you measured and your measurement. Compare answers with a partner. Re-measure and write the correct measurement in the third column if your answer was not correct originally.Item to be MeasuredMy MeasurementCorrect Measurement#7.53#6.75#5.75#4.41#31.21#2.97#1.44 ................
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