A compass and a straightedge
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It is necessary because measuring tools help you measure the length of an object accurately.
A protractor is one of them
A protractor is used to measure angles.When surveying a theodolite is used.There are a number of tools on the market that perform angle measurement.
I believe the German company Walter Tools made the first ones around 1950.
Answerthe earliest tools for which we have evidence were made from stone. It is very probable that wood was used for simple tools even earlier, but wood does not last the many thousands of years necessary to come down to us in the fossil record.