three-arm protractor

Directory

References

Discover

Town of Sisimiut located on the coast of the Davis Strait on Kangerluarsunnguaq Bay, Greenland

The Largest Islands in the World

Facsimile of one of William Henry Ireland's forgeries, a primitive self-portrait of William Shakespeare(tinted engraving). Published for Samuel Ireland, Norfolk Street, Strand, December 1, 1795. (W.H. Ireland, forgery)

The Time a Law Clerk Successfully Forged a New Shakespeare Play to Impress His Dad

Srinivasa Ramanujan, Indian mathematician and autodidact.

6 Interesting Facts about Srinivasa Ramanujan

Nativity Scene, Adoration of the Magi, Church of the Birth of the Virgin Mary, Montenegro

Why Is Christmas in December?

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

World Data Locator Map: Australia

Is Australia an Island?

The Battle of Gettysburg, July 1-3, 1863. (Civil War, Pennsylvania)

9 Worst Generals in History

three-arm protractor

navigation

Also known as: station pointer

Learn about this topic in these articles:

description

In protractor
This instrument, called a three-arm protractor, or station pointer, is composed of a circular scale connected to three arms. The centre arm is fixed, while the outer two are rotatable, capable of being set at any angle relative to the centre one.
Read More