| Name and Model Number | Ballantine's "The Macmillan Table Slide Rule" |
| Country of Origin | USA |
| Date of Manufacture | Published in 1931 |
| Front Scales | Unusual format, based on logarithm tables. |
| Back Scales | None |
| Scale Length | |
| Type of Rule | Chart |
| Construction | Card stock. Base chart is 21.6-cm x 28-cm. Sliding charts are 9.5-cm x 25-cm. |
| Area of Use | Generic |
| Comment | Gives results to 4 or 5 places. Separate slides for multiplication, division, powers, sins & tangents. Main chart has 20 columns and 200 lines of mantissas. Sliding chart has 10 columns and 200 lines of mantissas. Requires 2 sliding charts to operate. Notches and arrows in corners of the sliding charts facilitate the operation. Devised by J.P. Ballantine, Ph.D., published by the Macmillan CO, NYC, in 1931. I have never seen another example and none appear available when searching on Amazon books. |
| Rarity | RRR |
| Donor | Collection of Ed Chamberlain |
| Match Number | 159 |
| 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. |