Applying Metrics for Welding Correct & Incorrect Metric Expressions Copyright © Texas Education Agency, All rights reserved.
When a millimeter is less than one, a “0” is shown preceding the decimal point. Correct0.08 mm Incorrect.08 mm Copyright © Texas Education Agency, All rights reserved.
A decimal point and a zero are not shown when the millimeter dimension is a whole number. Correct8 mm Incorrect8.0 mm Copyright © Texas Education Agency, All rights reserved.
A millimeter dimension with a whole number and a decimal is not shown with a zero following the decimal fraction. Correct2.2 mm Incorrect2.20 mm Copyright © Texas Education Agency, All rights reserved.
A metric dimension is given as a decimal fraction rather than a common fraction. Correct.25 mm Incorrect¼ mm Copyright © Texas Education Agency, All rights reserved.
Symbols for metric units are shown in lower-case letters in most cases. Correct6 mm Incorrect6 MM Incorrect6 Mm Incorrect6 mM Copyright © Texas Education Agency, All rights reserved.
Drawings using millimeters will not show the digits separated into groups by commas or spaces. Correct1547 Incorrect1 547 Correct10289 Incorrect10,289 Copyright © Texas Education Agency, All rights reserved.
When listing multiple measurements, a semicolon is used to separate dimensions in a list. Correct28 mm; 16 mm; 5.2 mm Incorrect 28 mm, 16 mm, 5.2 mm Copyright © Texas Education Agency, All rights reserved.