Yellow Pickett Log Slide Rulers Lot of 2 Model #101-C - Circular & Model 12" N 3

Description

YELLOW PICKETT LOG SLIDE RULERS- EUC - 1960'S WITH CASES.
CIRCULAR AND STANDARD. ALUMINUM. Plus booklet
Lot of Two (2) - slide rulers #1 - perfect - 1957 -pickett 4 1/4" model #101-c - circular - all metal - dial-rule- satin yellow #2 perfect pickett all metal - model 12" n 3-es power log exponential. Log dual base. 1960. all metal, satin yellow both made in USA!!!!
CALLING ALL ENGINEERS, MATH GEEKS, FORMER NASA PERSONNEL!!
THIS PAIR "PERFECT" OLD SCHOOL HIGH TECH RULERS RARELY COME UP  IN THIS CONDITION. HIGH - TECH FROM AN ANALOGUE ERA, BUT STILL USEFUL. ALL ALUMINUM AND ACRYLIC DIALS.  THIS WAS A MUST HAVE IN THE DAY. MADE IN THE U.S.A.!!!!!
Lot includes:
Item #1
. One 4.25"  CIRCULAR - Yellow-  Model 101-C. Make many calculations.  Moveable indicators with hairlines. TWO on front, one on back. All numbers clear and sharp. Color of dial is perfect on front and back. There is a logarithmic "C" scale. L Scale, U Scale, and many more. INCLUDED IS A PERFECT WORKBOOK with examples. Written by Maurice L. Hartung  University of Chicago.  The slide rule comes in a perfect rigid dark brown leatherette case. Trapezoid shape with flap Imprinted on the outside in Gold that this ruler was presented to a member of the G.E.(General Electric)- M.S.D.(Merke Sharp and Dome) Team member for "Cost Improvement Award). 1957?? MADE IN U.S.A.  Chicago.
.
Item #2:
#2 Pickett - straight - yellow - model..n 3es. 12" all metal log log dual base exponential. perfect lettering, all scales and numbers distinct. The acrylic cursor clear and the hairline guide perfect. all components glide and move smoothly, fully functional. elegant heavy leather cordovan slip case and intact inner protective plastic sleeve.  The outside gold pickett lettering perfect. all seams on case tight. There is a buckle loop on back. The case flap shows no cracking.  For use or proud display.
Both are made  in a satin yellow background. These were designed to be easy on the eyes.
Own this rare circular and straight slide rule pair, or gift one or the other.  Great old school tech never goes out of style. These  helped put a man on the moon.
NOTE:
THESE WERE THE STATE OF THE ART. A MUST HAVE IN THE 1950S AND BEYOND. THEY WERE EXPENSIVE.
( A circular slide ruler similar to this one was used
in the final scene
used by Dr.
Strangelove
(Peter Sellers) in the same movie )
Please examine photos fully for additional condition information.
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May arrive in recycled packaging
These were part of a smoke free and virus free collection