ROLAND BUSER's
Explanation of technical terms from:
Adjusted to Worm-Wheel
A  LA-LE  LI-LZ  
  BA  BE-BZ M
CA-CLI  CLO-CON  COQ-CUV  CYL N
 DA-DR DU-DZ O
 E P
  F Q
 G R
H S  
I TA-TO  TR-TZ
J U
K V
  W-Z
Some famous makers:

 Source: Roland Buser   http://home.datacomm.ch/rbu