SI and US Systems
This system of units of measurement consists of seven base units and is the most widely used system of measurement
International System of Units (SI)
This term refers to a ratio in which the quantity in the numerator is equivalent to the quantity in the denominator, used to convert quantities to alternate units
Conversion Factor
This part of the dial caliper moves along the blade to adjust the distance between the measuring surfaces
Slider
This type of dimension should be included in the three principal directions: width, height, and depth
Overall Dimension
How old is Mr. Mehr?
34
This system of measurement is used in the United States and is similar to the British Imperial System of Measurement
US Customary System
The base value in the SI system
10
The small teeth located on the top of the caliper measure what?
The inside diameter (ID)
This rule states that dimensions should be placed so that it is not necessary to calculate or scale a dimension.
Include All Necessary Dimensions
2
This prefix in the SI system represents a factor of 106
Mega-
This prefix in the SI system represents a factor of 10-3
milli-
The large teeth on the bottom of the caliper measure what?
The outside diameter (OD)
This type of line should not be crossed with another dimension line or with an extension line
Dimension Line
Max
This term refers to the degree to which repeated measurements show the same result
Precision
This rule states that the number of significant digits should remain the same after conversion, especially when using exact conversion factors
Precision in Unit Conversion
This part of the dial caliper keeps track of larger increments (i.e., 0.100 in.) as the slider moves along the rack
Reference Edge
This rule states that dimensions should be attached to the view that best shows the contour of the feature to be dimensioned
Attach Dimensions to the Best View
What is Mr. Mehr's favorite baseball team?
NY Mets
This term refers to the digits in a decimal number that carry meaning indicating the certainty of the value, including all certain digits and one uncertain or estimated digit
Significant Digits
This method involves sequential application of conversion factors, where units that appear in both the numerator and denominator cancel out
Dimensional Analysis
This process involves closing the caliper completely, loosening the dial lock, rotating the dial to read zero, and tightening the dial lock
Zeroing the Caliper
This rule states that dimensions should not be duplicated or the same information given in two different ways
Avoid Unnecessary Dimensions
Where did Mr. Mehr go to college?
SUNY Oswego