Hope 740 custom circular slide rule made by Concise Co. of Japan and marketed under "Hope". This is an English-Metric converter, the front is a 3" pocket circular slide rule...attached to a rectangula

 

brechunec Store Vintage Lasco Slide Calculator Ruler ~Others Available~ Click to view supersized image Click to view supersized image Lots Of Engineering/Specialist Equipment Available ~ Including Cha

 

3 Different Coal Mining Stickers

 

UP FOR BID: PICKETT & ECKEL Slide Rule Model 4-T with Soft Case Item is in very good condition. Middle rule slides with ease. Length is 12 1/8". Width is 2 1/16", exclusive of sliding window. PAYM

 

A neat pair of opera glasses. They measure 4" x 2.5". Has green case with wear. See photos. The binoculars also have wear, too. See photos. On glasses, it reads: Imported by Aloe Herbstein & Co. O

 

Lot of 10 Uranium glass beads! These are good to safely test Geiger counters with. They also glow brightly under black light. Very fun items to give that science nut in you family! Most of my items fo

 

littledame47 Store Solid Brass Pocket Transit Compass 3" Survey Nautical Engineering Compasses OFFERED IS THIS VINTAGE BRASS SURVEYING COMPASS ANTIQUE FINISH. I PURCHASED AT ESTATE SALE, I DONT KNOW M

 

No notable defects on slide rule. Some minor marks/ spots on case. Please see photos for exact condition. If you have any specific questions, please feel free to ask. Thanks for looking - Please check

 

Frohse Anatomical Chart #1 Skeletal System from 1918 Max Brodel AJ Nystrom Note: This item has been relisted due to a non-paying bidder.Here is a Vintage American Frohse Anatomical Chart #1 Skeletal S

 

Pair of Antique Monaural Stethoscopes 1 Wooden, 1 Aluminium Dimensions of wooden stethoscope Overall height 18cm (7") Diameter of funnel 3cm (approx 1") Diameter of base 6cm (approx 2") Weight 32g Dim