Irwin Hilman GLM Pipe Bender

[Schmill]

Hi I recently bought an Irwin Hilman GLM pipe bender, but the angle markings on the former don't make a huge amount of sense to me.
If anyone has one can you please advise me as to how to use the angle markings to pull accurate angles?

I wasn't sure where it would get most visibility so posted in the plumbing forum, so if you do have any knowledge / advice on it please reply there, (link below):

Irwin Hilman Pipe Bender

Thanks

 

[Groovejet]

Best thing to do that i've found is simply just play around with it.
Try bending a 45deg bend, 90deg bend. Check it against known angles i.e carpenders square etc or even angles around the home!!
Just use your common sense and dont get to hung up on measuring exactly, you'll soon find the best way that suits yourself