What are Imperial fork blades??
Are they a special type of steel, wall thickness, taper, bend???
Are they predominately used for a certain type of bicycle??
Considering a custom frame and would like to get as much information as possible.
I did a search and Imperial came up wrt:
Brevet style bikes.
Scooper posted a Reynolds catalog showing the tubing wall thickness specified in the “Imperial” gauge (16, 17, etc) versus another standard like BWG or AWG. I can understand this as Reynolds was an English company.