Full Details

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
(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.