Need help adjusting front and rear sights for zero on No4 MK1/2

[Peter Laidler]

On the other hand, until I got out into the real world where I learned the simple formulas like 'foresight into the error, backsight out of the error and the mantra 'where there's a will, there's a simple way' and 'KISS' I learned the catch all zeroing formula:

x = h and x = rh
r R+h R+r

where X= change in height of foresight blade
r = sight radius
R = range
h = change in MPI

Now you can see why when it comes to zeroing the many weapons we were charged with looking after, I keep it simple