| Name and Model Number | Hiram Walker Whisky Slide Rule Chart |
| Country of Origin | USA |
| Date of Manufacture | c. 1951 |
| Front Scales | Cost per case - fitths/12qts (24 pints), ounces per drink, cost in cents per drink |
| Back Scales | Quantities per drink receipe |
| Scale Length | 12 cm (5 in) varies |
| Type of Rule | Chart |
| Construction | Cardboard and plexiglass |
| Area of Use | Brewing |
| Comment | Bartenders guide to mixed drinks. Not a very serious slide rule collector’s collectable, but it does have a logarithmic scale!
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| Rarity | RR |
| Donor | Collection of Clay Castleberry |
| Match Number | 330 |
| 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. |