10-19-2020, 11:28am
|
#11
|
A Real Barner
Points: 46,956, Level: 100 |
Join Date: Apr 2019
Location: SouthEast Tn.
Posts: 6,999
Thanks: 1,665
Thanked 9,866 Times in 3,759 Posts
Gameroom Barn Bucks: $856744
|
Quote:
Originally Posted by DAB
known as PK nails, used by surveyors, as they have a little dimple in the center, so you can line up a staff or a plumb bob exactly.
https://en.wiktionary.org/wiki/PK_nail
became very familiar with these years ago in Antarctica when I helped out the surveyors a bit.
|
Driving surveyor spikes into drifting ice in Antarctica > Iron Maiden
|
|
|