OP
Knobhead
Protractor? Card template? Never seen trunking done that way always used a tape measure and a marker.
That’s how I did it, foreman wouldn’t even get me a square even though they were stores stock.
At that time I was lucky in having a mate that was an absolute wiz at gas welding. Perfect sets and bends in trunking were near undetectable after spraying. But then we’d got the time to do it. One length of 6 X 6 I recall took a full day to put in, two sets and a 90 bend to go around a corner with a stanchion running up it. 30 welds in one length including the lid. The foreman wasn’t impressed about the time, but impressed enough to phone the site engineer to come and have a look at it.