Hi, Gary pleased to help, If you click on FORUM then scroll down to TIPS & TRICKS, on the right hand side at both the top and bottom of the page you will see a series of boxes with page numbers,
Click on 3 and I think it is either 1 2 3 or 4 entry, although it will tell pretty much what you now already know.
If you look at pictures of the cupola of the PANZER 4 you will see on many of them a vertical bar in front of the forward vision slit, this was so that the Tank Commander or Gunner could loose off a snap shot using the vertical bar and its alignment with the Main Gun Barrel and the Target,
I have never seen such a modification in photographs of a Tiger 1 Turret "BUT" very recently I was looking at a Japanese Hobby store website which was showing pictures of the first 1/16 Plastic kit by a new Chinese maker and of course it is a TIGER 1,
It is actually an early Tunisian Tiger, and I checked it over for mistakes and it really is very accurate,
It has the early unhinged front and rear fenders, the tow ropes are facing the rear of the Tank, the Headlights are halfway down the Glacis each side of the radio/operators and drivers places and at the rear the feifel air cleaners are the 4 pot type rather than the twinned type, and the killer is the 3 straight plate exhaust shrouds with 3 vents each side rather than the semi-circular later type,
There was one discrepancy and that was a vertical rod on the Mantlet of the main Gun in line with the Gunners twin viewing ports in the turret mantlet. this also is in line with the forward viewing slit of the Cupola, this would of course carry out the same function of the aiming bar on the Panzer 4.
The only problem is that while this might be a truthful modification and it does make a great deal of sense, It is just that as I said earlier I have never seen such a thing in any photographs so until DAVID BYRDEN makes his learned pronouncement I would be wary of fitting such a fitting.
I did notice what I thought was one schoolboy error in the Mantlet,
The picture showed the raised section that holds the Gunners viewing ports which of course are in early Tiger 1's flat then I skimmed over the pictures of the sprues in the box and low and behold there are 3 different Mantlets to cover the evolution of the Tiger 1 turret including the early flat Mantlet, which does help me in thinking the aiming bar might be based on genuine research.
Sorry for going on at length but I am trying to put last nights Rugby disaster to the very back of my mind.
One peep out of you KIASER, HERMAN and I will probably find myself banned from this Forum for foul and abusive language.

shaun