Knurling is a machining process normally carried our on a centre lathe. The act of Knurling creates a raised criss cross pattern on a smooth round bar that could be used as a handle, or something that requires extra grip
I have seen it done on the show " How It's Made" where the work piece was rolled across a plate which embossed the knurled pattern onto the work piece. I am currently looking for a knurling plate to...
Knurls come in all different sizes and TPI. I've seen 7 TPI up to 120 TPI all at different diameters and widths. Also flat dies for thread rolling machines and circular dies for lathes. Knurls can be...
Colt Woodsman probably re-barreled.
Your question has probably not been answered because the serial number 72xxx was made in about 1930 BUT the Sport Model Woodsman with 4.5" barrel did not make...