: I know that in the past I've seen backsaws with an adjustable fence
: slid up and down via two slots in the blade. Very handy for both
: dovetails and tenons. A google search finds nothing except one or
: references to antiques.
: Does anyone still make one?
Veritas has these:
and http://www.veritastools.com/Products/Page.aspx?p 0
Not exactly what you're looking for though.
Also came across this, which appears to be a bit closer to what you