Scale Set:
A [ B S C ] D --- "S" referenced to the "B" scale
LL1 LL2 LL3 [ C T CI ] D L --- "T" referenced to the "C" scale
4092 Framed Cursor ---- 10" slide rule with "L" type end brackets
and framed glass type cursor. Production # 326
4092 Column Cursor ---- 10" slide rule with "L" type end brackets
and column type cursor. Production #61
4092 All Glass Cursor --- 10" slide rule with "L" type end brackets
and all glass cursor with metal cursor blocks. Production #82.
4092 All Glass Cursor --- 10" slide rule with "L" type end brackets
and all glass cursor with celluloid cursor blocks. Production #74