| Manufacturer | Pickett & Eckel |
| Model | N-515-T |
| Serial No. | |
| Scale length | 25 cm |
| Overall length | 30.8 cm |
| Width | 3.8 cm |
| Body/Slide materials | Aluminum, 2.5 mm |
| Post materials | Stamped aluminum (curved cutout) |
| Cursor materials | Nylon / Plastic (groved, convex) |
| Scales |
H 2π A [B {S:S T:T} CI C] D {L Ln} special [special] special |
| Accessories | Brown 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 |