T-26 equipped with machine-guns (note that one turret has been omitted on the plan view) 
Twin turret T-26 tank from the second half of 1933. The tank has a combination of riveted and welded-riveted turrets 
Photo: Twin-turret T-26 (with machine-gun armament) crossing a river during combat training of the Moscow Military District forces, 1936. The vehicle has a riveted hull, with welded & riveted turrets 
Cross-section of a T-26 Mod. 1931 with MG armament 
A T-26 with a welded hull and welded right-hand turret. Moscow
Military District maneuvers. 1933 
A twin-turreted T-26 undergoing upgrading. Kubrnka 1940 This photo gives a good view of the road wheels introduced on later model vehicles.
T-26M32 with twin turrets and mixed armaments. Modification of the beginning of 1932 
Photo: twin-turreted T-26 tank with gun & machine-gun armament during manoeuvres in the Moscow Military district 1934. The tank has riveted hull & turrets.
T-26 equipped with mixed armaments. (one turret is omitted on the plan elevation.) 
A mechanical service is being undertaken to the twin-turreted T-26 from the first half of 1932 production series (with riveted hull & turrets). Moscow Military district, summer 1934. Note that the muffler was fixed by with 2 clamps 
Double-turreted T-26 tank with mixed armament and equipped with radio transmitter No. 7N type during manoeuvres in 1934. Coil antenna is mounted on the hull of the tank .
The first twin turreted T-26 tank equipped with 37-mm B-3 gun. The vehicle incorporates a number of common elements for tanks constructed in 1931 - riveted turrets, muffler fixed with 2 clamps, lack of jacket above air outlet. 
A twin-turreted T-26 armed with the PS-1 cannon. The auxiliary
gun shield on the weapon is missing. 
T-26M32 with twin turrets and mixed armament (gun & machine-gun). Modification of the beginning of 1932 
Left side clutch 
Right side clutch and driver's seat
Bulkhead to engine compartment 
T-26's hull interior. Driver’s seat 
Two lower photos are right and left side sections of the hull interior.
Left (machine-gun) turret 
Right (gun) turret 
M. Kolomiets, M.
Svirin,"T-26 Legkiy Tank" Frontovaya Illystratsiya, No 1, 2003
Pavlov I.V. Pavlov
M.V. "Sovetskiye Tanki i Samokhodno-Artilleriyskie Ustanovki 1939-1945" Moscow, 1996.
M. Svirin, M. Kolomiets, "T-26 Light tank", part 1, Armada,
Photos from Kubinka museum made & provided by Sergei Poddubny. Year 2003.