In this interactive object, learners review how to read a caliper. They then test their skills with eight practice questions.

In this learning activity you'll determine the measurement to be made and the accuracy required.

Learners read how inches of water column is used as a unit of pressure measurement. Practical applications and a conversion formula to psi are included.

Students view an enlarged, colorful depiction of the contents of an average square inch of skin.

In this interaction the student is presented with 17 questions testing his/her ability to read an inch O.D. micrometer.

In this learning activity you'll practice reading an inch micrometer.

Test your skills at reading a ruler.

Students read how to calculate feed rates for drills in inches per minute (IPM). The IPM formula is given and students work two practice problems.

Students review the best practices for using a ruler and answer five basic questions.