Full Details

Name and Model Number Pickett 52T
U.S. Air Force Photo S.R.
Country of Origin USA
Date of Manufacture Est. End of Korean War
Front Scales L. A, DF,CF,CIF, T, S,C, D, DI, K
Back Scales Ground size, Image size, Focal length, Altitude
Scale Length 25 cm
Type of Rule Slide Rule
Construction Aluminum with plastic cursor
Area of Use Photography
Comment Photo reconnaissance calculations
Rarity RR
Donor Collection of Clay Castleberry - California USA
Match Number 279
(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.