I decided to make myself a couple of dovetail markers with a 1:6 angle, my favourite.
The woods are hard maple and Macassar ebony, which needed plenty of care to get a good fit.
My Bill Carter mitre plane made quick work of cleaning up without tear out.
They are quite small at 45 mm long x 35 mm wide, but plenty big enough for anything I'm likely to make. The maple is 5 mm thick and the ebony 8 mm.
The finish is shellac, which holds up the nice stripes in the ebony.