This is one of the gages that fits on the carrier. The distance is 3/4" from the top of the carier, so it is easy enough to make your own, and in fact a nicer stand that automatically seats the blade would be preferred.

         

So, you always wanted to build handsaws...
Slotting Fixture
Slotting Back
Stamping Teeth
Making a Handle
Assembling the Saw