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1 cm = 10 mm. Start with ruler at 0 and mark ribbon at 30 cm. Then place ruler at the mark and measure 30 cm more and make another mark- you are up to 60 cm or 600 mm. Then place ruler at this mark and measure 5 cm, or 50 mm. Now you have a 650 mm ribbon.
Ruler. you measure with a ruler, yard stick, tape measure, or estimate.
Yes, the ruler does need to be straight when finding or measuring the length of a country on a map. If the distance curved, you can use a string and the ruler to measure the length.
A ruler!
You don't measure with length. You measure the length of an object with a ruler. You would use inches or metres as your units.
there are many instruments used to measure length depending upon the size of object , Ruler is Metric instrument used to measure length. Screw gauge is also used as an instrument used to measure length in mm.
The ruler measured the length of the table to be four feet.
Use a ruler.
I would measure it with a ruler.
metric ruler
Anything that measures length: a 30cm ruler, a metre ruler, a tape measure etc.
Sorry my ruler i have cant measure that...