| Name and Model Number | Small Pocket Calculator |
| Country of Origin | USA |
| Date of Manufacture | c. 1918 |
| Front Scales | 6" C, S |
| Back Scales | L, A (2 circles), ST(small angles). Edge scales: C, D |
| Scale Length | 5.7” (14.5 cm) |
| Type of Rule | Disc |
| Construction | Metal |
| Area of Use | Generic |
| Comment | G. Small Co., Model No. 1.
Two-piece metal dials with C and D scales on edge and rotatable metal cursor with celluloid window. Other scales on face of each dial. Dials rotate independently to align C and D scales. Pat. Feb 12 1918 inscribed on reverse center hub. |
| Rarity | RR-RRR |
| Donor | Collection of Dr. Paul J. Tarantolo Jr. |
| Match Number | 26 |
| Thumbnail (Click Picture for Details) |  |
| In conjunction with our 'donors' we assign a rarity rating to each item, based on the system devised by Herman van Herwijnen |
| (1929 - 2004), renowned Dutch collector, author, and creator of Herman's Archive, a collection of 5,000 slide rule images on CD. |
| • RR = Rare - 1 of 25 collectors has one; it may take a year to find an example in the marketplace. |
| • RRR = Very Rare - only a few known to collectors; may be several years before it comes up for sale. |
| • RRRR = Extremely Rare - a museum piece; unlikely that an example will come up for sale. |