This is a metallic ruler or measuring device, used for measuring the materials or items in centimetres, inches and millimetres.
Safety showers are used when someone has had a hazardous chemical splashed or poured on them. The safety shower is used to rinse it off as quickly as possible. Most safety showers will trigger an alarm when they are started, and will run for at least 15 minutes.
"A ruler, sometimes called a rule or line gauge, is an instrument used in geometry, technical drawing, printing and engineering/building to measure distances and/or to rule straight lines. Strictly speaking, the ruler is essentially a straightedge used to rule lines[citation needed], but typically the ruler also contains calibrated lines to measure distances"
catching people.
for pleasure
This is a metallic ruler or measuring device, used for measuring the materials or items in centimetres, inches and millimetres.
a ruler is used to measure inches or 1 foot
A ruler.
measuring scale, tape, or ruler is used.
Jim used his ruler to measure the length of his finger. Bob is the ruler of the world.
Ruler
The answer depends on the graduations marked on the ruler.
the ruler was used to measure the length of my book.
Plastic is generally used as an insulator. A plastic ruler would not be a conductor of electricity.
A ruler is used to help us measure things.
Measuring things
Ruler