About
THE MEASUREMENT WORKSHOP
Small marks can be surprisingly hard to read. Tape Measure Test gives you a calm place to learn them, one position at a time.
This is an independent educational website for practising the numbered marks and equal subdivisions found on inch and metric rulers. It is useful whether you are preparing for a shop class, getting comfortable with a tape measure for a home project, or returning to a skill you have not used in a while.
One useful skill, two directions
In Read the mark, you look at an orange pointer and enter its measurement. In Place the mark, you see a measurement and move the pointer to its position. Both exercises use the same exact scale. Practising both directions helps you connect the number with the physical pattern of marks.
Inch practice includes halves, quarters, eighths and sixteenths. Metric practice uses millimetre spaces with centimetre numbering, and lets you answer in either millimetres or centimetres. There is no countdown: accuracy comes first.
How the exercises are made
Each question is generated from a whole number of small scale divisions. A sixteenth-inch question uses whole sixteenth-inch steps; a metric question uses whole millimetres. Accepted answers are compared with that exact position. Equivalent forms such as 1/2, 2/4 and 0.5 are accepted, while rounded approximations are not.
The diagrams and practice interface are original work. The unit relationships used in the lessons follow the International System of Units and the exact international-inch definition described by the US National Institute of Standards and Technology.
What this site does not measure
The scale expands and contracts with your device. It is not a real-size screen ruler, a calibration tool or an instrument for measuring an object. Scores describe performance on these exercises; they are not a qualification or a guarantee of practical measurement skill.
Independent and easy to use
No account is required. Practice scores are kept in your browser if local storage is available, and can be cleared from the logbook. The website is hosted on Blogger. It is not affiliated with a measuring-tool manufacturer, school or standards organisation.
Found an unclear explanation or an accessibility problem? Please tell us what happened. Helpful corrections make the workshop better.