I'm fiddling with a 1987 manufacture pre-b CZ85 that I bought a while back and to my surprise just putting a 13lb CGW spring into it got me down to a 2lb SA pull, 5lb12oz DA pull. I thought that had to be wrong so I measured all my other guns and eventually even took a Captains of Crush gripper, weighed it on my kitchen scale, and then weighed it on my Wheeler digital gauge and the scale actually has it a fraction of an ounce lighter than the Wheeler gauge, so I think it's accurate. I've decided to go as far as to turning this gun into a Limited Optics gun, and I'm trying to figure out what, if anything, to do to it internally.
That preface to say, is there a way to measure the hammer hooks without pulling the trigger bar and sear cage and everything? I'm wondering about maybe using the depth measurement on a pair of calipers? I'm also wondering what the measurements on a Shadow 2 and a CZC or CGW race hammer are. I understand that they likely have a bit flatter of an angle to reduce the hammer having to be pulled back as the sear disengages but without a protractor or something I'd have a hard time measuring that. Last year Stuart made a post about how some of the early CZ spur hammers had better geometry than later stock triggers, and I'm wondering if I have one of those.
I also saw the sticky about metal guide rods, did early CZs come with short metal guide rods? This one is definitely metal but I have no idea what, if anything, was done to this gun in the 37 years between it coming off the assembly line and getting to my FFL.