Hi Nox
you can use the german sight to gauge a mill or even less read
http://www.fprado.com/armorsite/TIGE...tigerfibel.pdf
ie a target that is the width of the middle of the large triangle ie in line with the bottoms of the adjacent small 2 mill triangles (or at the base of one of the small triangles) is 2 mils wide half way up again gives you 1 mil half again gives you half mill etc if you are trained to use the sight it is obviously far better than a set of lines 5 mil apart.
The difference between a 4 mil and a 5 mil graduation is 20 percent 1 mil and 5 mil 80 percent. (a big difference)
Yes shermans 42 degrees field of view is better than tigers 25 but at 1x magnification wouldnt you just pop your head out of the tank? In any case the tiger commander has 360 degree periscopic view and its his job to aquire targets not the gunners. The gunners there to hit them which is why he only needs one sight. Looking at the Sherman gunners actual sights apparently he can choose between a - M71D Telescope sight 5x 13° or a - M10 Periscope sight 6x 11° both are inferior to the tigers 2.5x magnification / 25° Field of View or 5x magnification / 14° Field of View in the ONE sight. Why would the sherman bother with two nearly identicle sights in the one tank anyway?
Regards Chuck.