BT IS
1936-38
Prototype
Light tank

This tank was an development of the BT 7 and had sloping armour on its sides and was enlarged in width. (The turret in the picture comes from an earlier BT model). After getting a straight sloping front and a turret like the BT SV (see it from menu left) the vehicle was developmed to the A-20 and A-32 models later to be T-32.