Pickett & Eckel Model N-515-T
Cleveland Institute of Electronics
slide rule
slide rule
Click to view 300 dpi image.
ManufacturerPickett & Eckel
Serial No.
Scale length25 cm
Overall length30.8 cm
Width3.8 cm
Body/Slide materialsAluminum, 2.5 mm
Post materialsStamped aluminum (curved cutout)
Cursor materialsNylon / Plastic (grooved, convex)
Scales H 2π A [B {S:S T:T} CI C] D {L Ln}
special [special] special
AccessoriesBrown leather case stamped "Cleveland Institute of Electronics" w/ plastic insert, good condition.
Brown leather belt clip.
Notes CIE lesson pages covering special scales, .pdf (480 KB)
U.S. Patent 3,120,342 covering the special scales, .pdf (1.0 MB)
Tag No.PE-515-1