Pickett & Eckel Model No. 500
Ortho-Phase Log Log
(1950)
slide rule
slide rule
Click to view 300 dpi image.
ManufacturerPickett & Eckel
Model500
Serial No.11C1722
Scale length25 cm
Overall length30.8 cm
Width3.8 cm
Body/Slide materialsMagnesium, 4.0 mm
Post materialsStamped aluminum
Cursor materialsMachined aluminum (extended) / Plastic (plain, flat)
ScalesLL0 LL00 A [B T:T ST S:S] D K
L LL1 DF [CF CIF CI C] D LL3 LL2
AccessoriesGray vinyl case
NotesWhite numbers on black circle used on CI scale. LL1 scale is labeled LLI on left.
Identical to PE-500-5 except this has no mask numbers.
Tag No.PE-500-25
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