Slide Rule LOT Post Pickett Keuffel Esser Vtg Hyperbolic Computer Calculator LOT

Description

Up for auction consideration is a vintage grouping lot of
SLIDE RULE RULERS with their PROTECTIVE COVERS
FOUR (4) SEPARATE SLIDE RULES AS A ONE BID LOT
1. PICKETT AND ECKEL INC
with rubber feeling outer slip case covering which has
some tearing marks at side edges at upper folded top flap
SLIDE RULE GETS STUCK WHEN WITHIN CASE
mst slightly pry two sections apart to use rule
2. POST VERSALOG
leather outer case covering with side hook fastening
name on leather covering with ink pen
slide rule operates freely with no visible damage
3. SAME AS ABOVE WITHOUT SIDE FASTENING HOOK
this one also has former owners name with ink pen
on inner leather covering, slide rule operates freely
4. KEUFFEL AND ESSER CO. NEW YORK
leather covering with opened side end, this rule appears
to be about 10" Inches long, slide rule operates freely
wood construction with math equivalents on back side
FOUR (4) SEPARATE SLIDE RULES AS A ONE BID LOT
please examine the many pictures and photographs
Parcel Post Postage with Tracking is .00 within the USA