| Name and Model Number | Small's Pocket Calculator |
| Country of Origin | U.S.A. |
| Date of Manufacture | ~1918 |
| Front Scales | C, D // 6 ins, CI, S |
| Back Scales | L, R1, R2, SRT |
| Scale Length | 4.9 cm diameter |
| Type of Rule | Disc |
| Construction | Metal |
| Area of Use | Generic |
| Comment | |
| Rarity | RRR |
| Donor | Collection of Rod Lovett |
| Match Number | 26 |
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| 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. |