An experiment with propellers. It seems to me like something four would make. Suggestions are welcome. Thanks.
02/08/17: Thanks to the new Kerning feature, a separate "r" is no longer required. Also made the rings a little rounder and fixed the rings on U and u.
Slab Serif 300 as a stencil font. Bridges on the UC are vertical, on the LC horizontal. Bridges on numbers, symbols, punctuation are mostly vertical.
This is a clone of Slab Serif 300