Pickett & Eckel Model 500-ES
Ortho-Phase Log Log
(1959)
slide rule
slide rule
Click to view 300 dpi image.
ManufacturerPickett & Eckel
Model500-ES
Serial No.
Scale length25 cm
Overall length30.8 cm
Width3.8 cm
Body/Slide materialsAluminum, 2.5 mm
Post materialsStamped aluminum (straight cutout)
Cursor materialsNylon (extended) / Plastic (groved, flat)
ScalesLL0 LL00 A [B ST {T:T S:S} C] D K
L LL1 DF [CF CIF CI C] D LL3 LL2
AccessoriesBrown leather case w/ plastic insert, good condition; belt clip, fair condition. How to Use Log Log Slide Rules manual (C) 1953
NotesEarliest N500's still have LL0 and LL00 scales. Range values on LLn scales.
Tag No.PE-500-27
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