Furthermore , the front armour should be increased to 40 millimetres .
Estienne also had some special requirements : a track tension wheel should be fitted , adjustable from the inside , and a small gangway from the fighting room should improve the accessibility of the engine compartment .
The front armour should be increased to 40 millimetres .
Estienne also had some special requirements : a track tension wheel should be fitted , adjustable from the inside , and a small gangway from the fighting room should improve the accessibility of the engine compartment .