This is a kueffel esser slide ruler with case. It was made in the usa. It is 12" long. Today after I took pictures to list this with the plastic parts above and below the slider part crumbled apart. I

 

K & E KEUFFEL & ESSER MODEL 68 1210 SLIDE RULE AND LEATHER CASE . All in Excellent condition with little signs of use . Made in USA. Has Pats. Pend Made in USA 68 2810 LOG LOG DUPLEX DECITRIG

 

SUPERDEALS949 Store STUNNING~VINTAGE~WOOD AND BRASS MAGNIFYING GLASS~NICE CLEAN COLLECTIBLE STUNNING~VINTAGEWOOD AND BRASS MAGNIFYING GLASSNICE CLEAN COLLECTIBLE WEIGHS 24 OUNCES 4 3/4 " DIAMETER GLAS

 

Nice set of 8 pieces is complete in a blue velveteen lined case. The case has a tear in the center of the top flap and shows in pictures. These are German made professional drafting instruments and ar

 

Item is in Like new condition item has barely any visible marks on it. Pretty much flawless. MINERVA OPISOMETER Swiss-made Minerva Opisometer or Curvimeter for measuring non-linear distances, as on a

 

VINTAGE K & E SLIDE RULE POLYPHASE NO. N4043-3 MADE IN USA GREAT CONDITION WITH CASE ORIGINAL BOX INCLUDED BOX TOP HAS SOME WRITING UNDER COVER NO BREAKS FUNCTIONS PERFECTLY LOW STARTING BID OF ON

 

RELISTED DUE TO NON-PAYMENTAN ANTIQUE ADJUSTABLE BRASS TABLE TOP MAGNIFYING GLASSPROBABLY DATING TO THE LATE 19TH / EARLY 20TH CENTURYSOLID BRASS WITH LAQUERED FINISHSTAND HAS THREE BALL ENDED FEET WH

 

Slide rules are new in box. They include everything shown in the picture. Leather case, instructions, cardboard storage box. Only shipping to U.S. addresses. No international bidding.

 

For sale is a set of vintage Psychological Tests: Stanford Binet Scale by Lewis M Terman and Maud A Merrill Two boxes, one each for Form M and Form L. Copyright dated 1937. Comes in two boxes with a h

 

This is a super clean Post brand slide rule. It is a Hemmi Japan Versalog 1460 and is 12 1/2" long and the leather case is in great condition with very little wear and has the clip hanger. .