Leica film leader template - suggestions ?

[MattKing]

The 1933 Leica General Catalog says, "The [ABLON} trimming template for Leica films is greatly to be recommended for the prescribed trimming of the Leica films. Trimming that is not carried out exactly in the prescribed fashion may easily cause jamming of the camera mechanisms." The price in 1933 was £0. 5.6

It is reasonably likely that at least some people in 1933 were accessing motion picture film to feed their Leica still cameras.
And they had a clear need to cut the film quite precisely.
It is amazing, isn't it, how history repeats itself.