Class I vs. Class II Tape Measures: What Are the Differences?

Did you know tape measures come in different classes? From flooring installation to sewing projects, various tasks require measuring tapes with different properties and benefits. The large selection of tapes allows you to find a measuring tool that best fits the task at hand and your needs.

Along with ranging in varying forms, from retractable to surveying, measurers also differ in class type. Class I and II measuring tapes are the two most common variations, but what makes them different from one another?

What Do the Classes Mean?

All tape measures go through extensive protocols before heading to the store. These standards ensure the tapes meet the necessary requirements to function properly and become a reliable source of measurement. Within those guidelines are accuracy tests calculated by the tape’s margin of error. Each class system features different accuracy levels and margins of error to a certain degree.

Class I vs. Class II Accuracy

The biggest difference between class I and II tape measures is their accuracy and margin of error. Class I tape measurers are the most accurate forms of measurement. They consist of an error margin of no more than plus or negative 1.1 mm over a 10 m length, the smallest window possible. Class II, on the other hand, features a margin of error around plus or negative 2.3 mm over 10 m. The different ranges of accuracy distinguish tapes that qualify in class one or two.

Which Is Better for You?

The small difference in error between a class I tape and a class II version influences the results in certain scenarios and in the eyes of professionals. In most cases, people opt for the more accurate tape measurer to guarantee their calculations.

Although they feature a slightly higher margin of error, class II tape measures still provide accurate measurements fit for construction work and various other tasks and trades. For those working in fields that require a higher degree of detail, class I tapes supply the precision you need.

At Perfect Measuring Tape, we offer a range of tape measures for various trades, projects, and requirements. Our collection of steel measurers provides you with top EC ratings, falling in class I and II, supplying you with precise and accurate readings. We offer metal tapes for various fields, including industrial tape measures that come with all the necessary properties and ratings one would need to get quality measurements. Check out our range of tape measurers and find a tape that’ll get the job done and do it well.