A caliper may show a measurement of 24.36 mm for an object, whereas a metal ruler might indicate that the object measures approximately 24 mm. Although the caliper appears to be more accurate because it reports more digits, this isn’t…

How do you know which measuring instrument is appropriate to measure the width of your notebook, the diameter of a tiny screw, or the mass of a liquid? There are a few things to consider when deciding on a measuring…

The first time you read the caliper, you get 18.42 mm. You read it again and now you have 18.39 mm. One more measurement gives 18.44 mm. The caliper is not broken, and the measurement is not wrong, but the…

Put a ruler next to a pencil and read the scale from directly above it. Move your head left and right without moving the ruler or the pencil. The pencil seems to cross different lines on the scale although neither…