| Mark's Slide Rule Magnifiers K+E - Pickett - Post (Click on images for details) | ||
|---|---|---|
| Frederic Post (Sun-Hemmi) unknown date |
|
Shown on Hemmi 153 |
| Keuffel & Esser Model 4185B Magnifier 1935-1953 |
|
Shown on K+E 4055 |
| Keuffel & Esser Model 4185C Magnifier 1935-1953 |
|
Shown on K+E 4083 |
| Keuffel & Esser Model 68 2224 Magnifier ca. 1962 |
|
Shown on K+E 4092-3 |
| Keuffel & Esser Model 68 2233 Magnifier ca. 1962 |
|
Shown on K+E 4081-5 |
| Pickett & Eckel Model 500M Magnifier ca. 1950 |
|
Shown on P&E 500 |
| Pickett & Eckel Model T500M Magnifier ca. 1954?-1957 |
|
Shown on P&E 500-ES |
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