Not trusting my eyes, (I am that old now) and being a knife mechanic, I took the machinist's scale & magnifying glass (to read the scale) to the knives and here is what I found:
On all of the Schrade/Ulster/Imperial knives (including the WT) the pin placement is consistently 1/8" from the bolsters on both ends of the knife.
On the Camillus knives, including the Powr-Kraft (made for Montgomery Wards) the distance can vary as much as 1/32". On the large end, (the end where with the large clip blade & the coping blade are pinned), the distance from the bolster to the hole is about 1/4" (16/64"). On the small end of the knife where the small clip blade is pinned, the distance from the bolster to the hole is
about 3/16" (12/64"). This is true from the bone handled knives up through the traditional Yello-Jaket with the last tang stamp used.
I do not know why the difference of the distances in the pin placement at opposite ends, just that it is. I am open to suggestions. It appears that pin placement was determined by using a number that was roughly half the width of the handle.
For example: Using the Camillus frame without handles (shown previously) the liner width was 32/64” at the large end and the pin hole was placed 16/64” from the bolster. On the small end the width is 28/64” and the distance from the bolster is about 14/64”. I do not know why that method was used, just that it appears that that method of pin placement was used.
I did find some variance in the distances of the pin placement in the Camillus knives. I am not sure why that is, perhaps worn or replaced equipment at some point in time.
As Jerry pointed out, the Camillus knives have match striker pulls and the Schrade/Ulster/Imperial knives have the plain long pulls.
Now, I hope I have not confused everyone with this information. I hope I have explained it so everyone can understand it. If not let me know & I will try again.
