English to Polish Tech/Engineering Mechanics / Mech Engineering

XIX-wieczny poradnik obozowania w dziczy. Rozdział poświęcony namiotom.

The upright poles of a stout set for a wall-tent of the United States Army pattern should be round or eight-sided, and about two inches in diameter.[21] If you prefer to have them square, round off the edges, or they will be badly bruised upon handling. Drive a stout iron pin[22] seven or eight inches long into the centre of the top until it projects only about three and a half or four inches, or enough to go through the ridgepole and an inch beyond. It will be necessary to bore a hole in the pole before driving in the pin, to prevent splitting. A ferrule is also serviceable on this end of the pole.

[22] What are known as "bolt-ends" can be bought at the hardware stores for this purpose.

Tutaj widać je na obrazku:
http://www.historywebsite.co.uk/articles/Darlaston/GKN/GKN2....