Plumb bob – A heavy metal object, cylinder- or cone-shaped, with a sharp point at one end that is suspended by a string to produce a vertical reference line useful in aircraft measurements.
Defining the Language of Aviation
Plumb bob – A heavy metal object, cylinder- or cone-shaped, with a sharp point at one end that is suspended by a string to produce a vertical reference line useful in aircraft measurements.
This site uses Akismet to reduce spam. Learn how your comment data is processed.
© Copyright 2017 All Rights Reserved
Speak Your Mind
You must be logged in to post a comment.