The Type 69 and Type 79 are two models of Chinese main battle tanks. Both developments of the Type 59 (based on the Soviet T-54A), they were the first independently-developed main battle tanks by China. Their lineage can be seen through the distinct gap between the first and second roadwheels. Other improvements included a new engine, ballistic computers, and laser rangefinders. The more advanced Type 79 was equipped with a 105 mm rifled gun, also seen on the later Type 88 tank.