Convert from Scots foot to shaftment [ancient]

Unit Definition (Scots foot)
The Scots foot is a traditional distance units in Scotland. The Scots foot equals 1.005 405 4 English foot (about 12.065 English inches or 30.645 centimeters). The English foot and statute mile, of course, are now official in Scotland.

Unit Definition (shaftment [ancient])
A shaftment, when used as a unit of length, is usually six inches or two palms, i.e. 15.24 cm (for the international inch). It is thought to be the distance from the tip of the outstretched thumb to the other side of the palm.In English this unit has mostly fallen out of use, as do others based on the human arm: digit (1/8 shaftment), finger (7/48 shaftment), palm (½ shaftment) hand (2/3 shaftment), span (1½ shaftments), cubit (3 shaftments) and ell (7½ shaftments).