You can tell by the heads. 5.7 has aluminum (silver) 4.3 has steel heads (darker grey or painted black.)
The difference between 43 and 40 is 3.
It is 1542 feet.
5 degrees
43 feet
43!!
A factor of 43?
43:42
Diff = 36
About .02 Seriously, I think is a .43 is a slightly wider angle than .45, or slightly more panoramic.
x + y = 43 x - y = 13 2x = 56 x = 28 28 + y = 43 y - 28 = 43 = 15 I'm sure you meant: y = 43 - 28 = 15
43
43 and 17.