Pickett 520-T Greg's Slide Rules
Front Left

Front Right

Back Left

Back Right

Pickett 520-T - Notes

  1. Also known as the US Air Force Aerial Photo Slide Rule Type A-1.
  2. Another example of a specialist rule made to order by Pickett.
  3. This rule also came in a 5" version known as the Pickett 700.


Further details about this Slide Rule:

Brand Pickett
Model 520-T US Air Force Aerial Photo Slide Rule Type A-1
Country of Manufacture USA
Scales Front L, A, DF [CF, CIF, T, S, C] D, DI, K
Scales Back Ground Size, Ground Speed [Image Size Centimeter, Image Size Feet, Focal Length] Altitude
Number of Scales 17
Slide Rule Materials Aluminium
Cursor Materials Metal/Plastic with Metal Screws
Cursor Lines 1 Front, 1 Rear
Scale Length 25 cm
Length 30.7 cm
Width 3.8 cm
Condition Good, initials scratched on front left
Documentation None
Accessories Leather case

Last updated: 2002-10-12 22:00 AEST
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Copyright 2002-2004. All rights reserved. Contact: Greg