Full Details

Name and Model Number Gilson Midget
Type 1, Version 1
Country of Origin USA
Date of Manufacture c. 1915
Front Scales C, L
Back Scales Sin/Cos Degrees Tan/Cot
Scale Length 10 (25 cm)
Type of Rule Disc
Construction Varnished paper scales on plywood with metal cursors.
Area of Use Generic
Comment Type I - Version I (after Aldinger and Chamberlain,
The Gilson Slide Rules - Part I - The Small Rules, JOS:9.1)
Rarity RRR
Donor Collection of Dr. Paul J. Tarantolo Jr.
Match Number 29
(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.