Full Details

Name and Model Number Paisley Calculator
Model A
Country of Origin USA
Date of Manufacture 1939
Front Scales A (left tape) B (right tape)
Back Scales none
Scale Length 20" (50 cm)
Type of Rule Other
Construction Metal
Area of Use Generic
Comment For basic math calculations.
Metal case with celluloid windows front and back and two moveable ribbons arranged side by
side containing the scales. Scales rotated by knurled knobs on either side of calculator.
Rarity RRR
Donor Collection of Dr. Paul J. Tarantolo Jr.
Match Number 25
(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.