Y e e e s s, 7/8ths is OK ish but
it is 1/8th short of an inch
Now 1/12 th scale, now your talking!!!
only joking
7/8ths, and 1/12th, usually done in narrow gauge,
is also very similar in scale to standard gauge run on 5" track
which of course, due to bigger prototypes, is a lot bigger models,
for example on 5", a mainline coach of modest length say about 50 feet in the real world scales out at well over 4ft in a model
which is why 7/8s & 1/12 is ideal for the smaller type engines & rolling stock