Full Details


Name and Model Number Webb's Stadia Slide Rule
Keuffel & Esser 4105
Country of Origin USA
Date of Manufacture 1903 first appeared in K&E catalog
Front Scales Stadia surveying scales
Back Scales none
Scale Length Over 48" on a 1" diameter cylinder 15" long
Type of Rule Cylinder
Construction Paper scales on wood cylinder, felt lined metal cover with one scale
Area of Use Topography
Comment Cost was $5.00 in 1903 K&E catalog.
K&E sold this model from 1903 to 1923.
Rarity RRR
Donor Collection of Clay Castleberry
Match Number 245
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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.