K&E Deci-Lon Family of Slide Rules

Scale set:

Ln-3 Ln-2 Ln-1 Ln-0 A = B T SRT S C = D DI K
Sq1 Sq2 DF = CF CIF L CI C = D Ln0 Ln1 Ln2 Ln3

• 68 1100 --- 10" Plastic slide rule with green leatherette case. Serial #187586.
• 68 1100 --- 10" Plastic slide rule with tan leather case. Serial #089552.
• 68 1100 --- 10" Plastic slide rule with down graded leather case and no color bars on the ends. Serial #256987. This variant was a result of a damaged mold on one of the vertical bars so all of the bars were removed in about 1974.
• 68 1100 --- 10" Plastic slide rule in new look prototype style. Never produced in quantities.

• 68 1130 --- 5" Plastic slide rule. Serial #027334.