| Name and Model Number | Denoyer-Geppert |
| Country of Origin | USA |
| Date of Manufacture | 1972 |
| Front Scales | |
| Back Scales | |
| Scale Length | |
| Type of Rule | Other |
| Construction | Plastic |
| Area of Use | Other |
| Comment | Used for teaching.
Chalkboard projectable slide rule tutorial using 79, 35mm slides in carousel, book and audio tape. |
| Rarity | RRR |
| Donor | Collection of Colin Barnes |
| Match Number | 79 |
| Thumbnail |  |
| RR | = Rare -- 1 of 25 collectors has one; it may take a year to find an example in the marketplace. |
| RRR | = Very rare -- only very few known to collectors; may take several years before one comes up for sale. |
| RRRR | = Extremely rare -- a museum piece; unlikely that an example will ever come up for sale. |