| Name and Model Number | Hemmi 258 / Post Versalog 1460 |
| Country of Origin | Japan |
| Date of Manufacture | June 1951 |
| Front Scales | LLO, LL/O, K, DF [ CF, CIF, CI, C ] D, R1, R2, L |
| Back Scales | LL/1, LL/2, LL/3 [ T, ST, S, C ] D, LL3, LL2, LL1 |
| Scale Length | 25 cm |
| Type of Rule | Slide Rule |
| Construction | Celluloid on Bamboo |
| Area of Use | Generic |
| Comment | Cardboard box has Hemmi markings only, including a label on the end
of the box identifying the slide rule as a No. 258, and a price on the back of the box of ¥2.500. Cursor has Hemmi markings, but no Post logo. |
| Rarity | RR |
| Donor | Photo courtesy of Jodie Hobson |
| Match Number | 331 |
| 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. |