Compass Model 403
slide rule
Click to view 300 dpi image.
Serial No.
Scale length10.2 cm
Overall length11.8 cm
Width2.3 cm
Body/Slide materialsBamboo, celluloid
Post materials
Cursor materialsMetal, plastic
Scales 4 inch ruler
A [B CI C] D
   [S L T]
AccessoriesGreen leather case , good condition.
clip-on magnifier.
NotesThis is a rebranded Relay/Ricoh 403 with inch ruler instead of cm.
Tag No.COM-403