I use a fine mark steel ruler.
millimetres (or tenths of millimetres, if you have a micrometer)
Centimetres and millimetres.
You can use a ruler or a measuring tape to measure the length of a fish in a bowl. Place the measuring tool along the straight body of the fish from the tip of its nose to the end of its tail to get an accurate measurement.
Scale
You can use a measuring tape, a ruler, or a yardstick to measure your height.
steel rulemeasuring tapelaser measuring deviceruleyardstick...
mgs
A theodolite.
Millimetres.
measuring tape
Caliper. Micrometer
millimetres