This question about instructions for vintage timing fixtures comes up frequently. Sometimes the instructions are available, other times not.
IF you understand early Ford distributors, you won't need instructions. The problem is that guys try to time a distributor without understanding what they want to do.
Bubba just got ahold of a KRW fixture and was looking for instructions. He's curious, I guess. The original KRW instructions are among the worst I've seen ... if Jim tries to figure them out, we won't be hearing from him for a while.
Any early Ford dual point distributor requires 3 basic adjustments:
1. The LH (as seated in the car) points need to be set as close to 22 1/2 degrees as possible. It's not that 22 1/2 is magical; this setting provides the proper range for the second adjustment.
2. Set the initial timing using the sliding index on the side of the case. A good timing fixture will locate 4 degrees (crank) advance for you. Most like the KRW do it automatically if you adjust the point break on the fixture to the proper mark.
3. Set the RH points to give a total dwell of 36.
Timing fixtures all display information that relates to the above. There will be a means to set the LH points. There will be a way to set the initial advance. There will be marks for total dwell with the RH points.
It's just another tool. I've never seen instructions for a screwdriver ... of course, if you don't know anything about screws, you might need some instructions.