How To Layout 90 Degrees Round Elbow

This video will show you how to layout a round elbow 90 degrees duct using a compass, t square, set square and others.
Song Used:
De0rbit - www.youtube.com/watch?v=dYfzu...
Kindly visit DUCT ASSEMBLY & FABRICATION
/ 10153. .
It's a new Facebook group where you can post and watch ducting creations
Timestamps:
[0:00] - Intro
[0:10] - Layout
[14:57] - Outro