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Pickett 800-T Log Log Synchro-Scale

• Type: Log Log Duplex
• Size: 10 Inches
• Material: Aluminum
• Scales:
  • Front: +LL1 -LL1 A [ B ST T S C ] D DI K
  • Back: +LL2 -LL2 DF [ CF CIF L CI C ] D +LL3 -LL3
• HvH: 3342 (best match)

With leather case and belt strap. Previous owner's name scratched into the case with a sharp knife.

Functionally identical to the later Pickett N500, the 800 features "Synchro-Scale" technology. That is, pairs of scales are drawn back-to-back with a horizontal line between them. Saves room, but makes for a busier view. And why combine K and DI scales?

Made by Pickett and Eckel of Chicago, sometime around 1960 (Based on logo, latter-style end posts and red numbering on inverse scales).