| Name and Model Number | Shanghai KXSJ |
| Country of Origin | China |
| Date of Manufacture | c 1979 |
| Front Scales | Special = Special = Special DF = CF CIF CI C = D |
| Back Scales | Special = Special CI C = D A K L = S T Special = Special |
| Scale Length | 25 cm |
| Type of Rule | Slide Rule |
| Construction | Plastic |
| Area of Use | Other |
| Comment | Used for profile steel hole design.^M Two slides and two cursors |
| Rarity | RRR |
| Donor | Collection of Tang Cheng |
| Match Number | 94 |
| 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. |