[KV7]

Marcello, yes of course stadiometric range-finding is pretty inferior to coincidence, the method is really a multiple round one, the first shot determines the error which is then corrected, hence the almost universal use of use of AP-T rounds on the D-10T, the tracer allowing easier spotting of range error. A skilled gunner could of course estimate the ratio of the size of the target against the target the Stadia was designed for, and make some first round correction.

When did Russian tanks get coincidence rangefinders, and on what models ? My understanding was there was a transition straight from stadiametric sights to the TK-1 system.

For example, the T-62 has stadiometric rangefinding with TSh-2B-41 gunner day sight (3.5/7x)and TPN1–41–11 night sight from 1960 till 75, where it then gets the TK-1 or TK-3 laser system.

Was there a coincidence system installed between 1960 and 75 ? I cannot see any mention of it ?