4TP, otherwise known as PZInż'' ''140, was a Polish

light tank A light tank is a Tank classification, tank variant initially designed for rapid movements in and out of combat, to outmaneuver heavier tanks. It is smaller with thinner vehicle armour, armor and a less powerful tank gun, main gun, tailored for ...

prototype. It was designed by 16 December 1936 by Edward Habich of the Państwowe Zakłady Inżynieryjne works. A light reconnaissance tank, it was to become a heavier replacement for TK-3 and

TKS The TK (TK-3) and TKS were Poland, Polish tankettes developed during the 1930s and used in the Second World War. Design and development The TK (also known as the TK-3) tankette was a Polish design produced from 1931 based on the chassis of the ...

tankette A tankette is a tracked armoured fighting vehicle that resembles a small tank, roughly the size of a car. It is mainly intended for light infantry support and scouting.

s in Polish service. In addition to light, manoeuvrable chassis, the tank was to feature a turret with one nkm'' ''wz.'' ''38'' ''FK autocannon and one ckm'' ''wz.'' ''30 machine gun. Only a single prototype was built. Extensively tested by the army, it proved a reliable vehicle. However, the army decided that by the time serial production could start, the design would already be outdated, and no serial production followed.

References

Light tanks of the interwar period Light tanks of Poland Military vehicles introduced in the 1930s {{mil-vehicle-stub