Line between two central hatches point is 122-126cm----it means 1260 mm at the most.
From the picture above it is obvious that the Tc's seat's right hand side edge is located on the crew hatch hole
So from the turret center point(1260/2=630 mm) 630 mm is the distance at which the right side edge of Tc's seat is located.
There is a distance of at the most 250 mm between the inner side wall and the right side edge of Tc's seat is located.
So the distance between the turret center line and inner side wall is 630 mm+250 mm=880 mm
Till the crew hatch center there are no storage boxes on the production version of ARJUN.
SO the outer most turret wall is located at( 3200mm/2) 1600 mm away from the turret center line.
NO its not, why do you keep making this fallacious claim when a frontal picture of the tank clearly shows this not to be true?? is it because it says 3.2 on dejawolfs picture? because that distance is from the other side of the tank not the other side of the turret.
So 1600 mm -880 mm i.e 720mm is the space available for composite armor on ARJUN turret side.
Even if you give an error factor of 200 mm,
If you have an error factor of 200mm on such a relatively small object as a tank your estimation is wrong, Never mind that your error is closer to the double that number.
(if people dispute the assumption whether TC's seat is at the center of the crew hatch or the estimate for width of the elbow area)
space available for composite armor on ARJUN turret side is (720 mm-200mm)= 520 mm.
There can be no error in this estimate.
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Storage boxes start only after the crew hatch as can be seen in this image, The first storage box of Tank-Ex turret has been replaced by ARMOR block in the production version of ARJUN.
Look closely and you will notice the side wall curving inside to offset the reduction in armor space besides the storage box that start at ammo storage,
So there is a provision of uniform armor space for the side turret of ARJUn if you accept the width of the turret as 3200 mm.
Because in perspective view(a photograph is always a perspective view) the distances farther from the camera are actually larger than they appear ,compared to distances closer to the camera.
See both the crew holes alone is 550 mm in dia. So the crew hole hatch covers standing straight should measure atleast 600 mm in dia .
So when you try to measure the distance between the crew hatch holes you can use the crew hatch cover as a scale distance because of the reason stated above.
Why I am sure is the same measurement can be verified on the turret top picture between the green lines.
SO this green carpeted area should measure somewhere between 1200 mm and 1300 mm according to my estimate.
Nobody was disagreeing that between the centers of the crew hatches there are 1.2-1.3m but that width is not the same as the width of the mantle, which is smaller as illustrated by both me and PMAITRA look again on his picture the green area dosen't enter the center of the commanders front vision block but of to the side of it, the same with the loaders vision block.
The extreme edge of both the crew seats are exactly positioned on the border line of the green shaded area as per the Tc seat picture above is my estimate.
WHich corresponds to the green shaded area marked by PMAITRA in the picture below.