Micrometers
It is necessary because measuring tools help you measure the length of an object accurately.
Rulers? .... :]
What tools would the tailors use in colonial times? They would use scissors, needle and thread and measuring devices, such as rulers, measuring tapes, etc. .
There are many instruments (tools) used for measuring. It depends on what you're measuring. A ruler can be used to measure length, a watch to measure time and an anemometer for measuring wind speed.
Measuring tools: Ruler or Protractor .
Mechanics use a wide variety of tools to ply their trade. They use cutters, screwdrivers, wrenches, hammers, voltmeters, and other more specialized tools.
car lift; jack
Laser measuring tools are easier and quicker to used than rolls of measuring tape. One also does not need to use a pen and pencil to mark measurements.
bob says hey
measuring tape
No devices use for measuring in math. In math we cannot measure we just calculate.
32-1-101 use and care of hand tools and measuring tools