Stanley might have the parts...or a depth stop from a 78 will work in a
pinch and I know they still have these
#78 depth stop part number is
ADJ. DEPTH GUAGE-12-078-3-$4.50
DEPTH ADJ SCREW -12-078-4 $1.10
screw may not quite fit the older threads
Stanley # is (800) 262-2161 I think parts is #4 on the menu...
"there's no tool like an old tool...galoot and proud of it"