mm
A ruler or tape measure.
A ruler or a measuring tape can be used to measure a straight sided object. Simply lay the ruler or tape along the object's edge and read the measurement where it stops.
Length is typically measured using tools such as rulers, tape measures, or calipers. These tools are marked with units of measurement such as inches, centimeters, or millimeters to accurately determine the length of an object.
The length measurement can be made using a ruler, measuring tape, or calipers, while the direction measurement can be made using a compass, protractor, or GPS device.
To measure in millimeters (mm), use a ruler or measuring tape with markings in millimeters. To measure in centimeters (cm), use a ruler or measuring tape with centimeter markings. For meters (m), use a meter stick or measuring tape with markings in meters. Simply align the start point of the object you are measuring with the zero mark on the ruler or tape and read the measurement at the endpoint.
A ruler or measuring tape
A ruler or tape measure.
a ruler or a tape measure
Crab rulers tape measures. And the regular rulers
12" or the length of your ruler.
Anything that measures length: a 30cm ruler, a metre ruler, a tape measure etc.
A ruler or tape measure can be very useful.
Rulers, tape measures, calipers.
Tape measures are useful for measuring distances that are too large to measure with your ruler.
A tape measure or ruler is commonly used to measure the length of a desk.
Shells have an irregular shape; they are best measured with a flexible ruler, such as a cloth tape measure.
That task can be accomplished with a ruler, a tape measure, or a measuring cup.