The K&E 68-1210 “Decitrig” is another slide rule from the third batch I acquired in 2022. It’s a wooden slide rule with a laminate surface. The edge of the slide rule labels it as a “Log-log duplex Decitrig” with a copyright date of 1947. It’s a double sided slide rule with LL0/L/K/A/D/DI/LL1 scales on one side and LL02/LL03/DF/D/LL3/LL2 scales on the other side. This one came with a case with a previous owner’s name written inside the flap.
Serial number: 191555
Dimensions: 31.8 cm x 4.1 cm x 0.6 cm
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