This listing is for a vintage slide rule. It measures approx. 12 1/8" long when closed x 1 3/16" wide. It appears to be in excellent condition. Bid with confidence: I am an ID Verified Seller and have

 

No reserve. High bidder wins...And...I ship fast! Nice condition Lawrence Engineering # 250-BT scientific / engineering wooded slide rule with case. Looks and operates nice. Some very small marks. Inc

 

ANTIQUE MICROSCOPE SLIDE. FORAMINIFERA. COAST OF AUSTRALIA. No1. SEE IMAGES FOR CONDITION. EXCELLENT. IMPORTANT: AS FROM 2ND APRIL 2013 THE ROYAL MAIL HAVE DRAMATICALLY INCREASED THEIR PRICES. AS A RE

 

OFFERED HERE IS A UNMARKED MINERS OIL WICK LAMP OF THE HOOVER BROS. PATENT. IT MEASURES 2 3/4" TALL TO THE TOP OF THE LID, AND 2 3/4" TO THE TIP OF THE SPOUT. THE BASE IS 1 9/16" IN DIAMETER. IT HAS W

 

oldandcurious Store Cataract : Nature Symptoms Treatment Surgery 1834 opthalmology eyes On offer here is a book titled - Cataract ; a Familiar Description of its Nature, Symptoms, and Ordinary Modes o

 

I have owned this pocket transit for several years and only used a couple of times. Very good condition - no scratches or scuffs. Brunton Specifications as follows: Includes Leather Transit Case Singl

 

Vintage Precision Drafting Tool Set Freidmann Germany I will combine shipping so check out my other listings.

 

Vintage Eagle Pencil Co. USA Drafting Tools with Case 9520 FBONUS K & E DRAFTING STENCIL15 PEICES IN ALL INCLUDING EXTRA PENCIL LED AND 2 LED HOLDERSANY QUESTIONS PLEASE ASK AND CHECK OUT THE PICT

 

Classic Keuffel & Esser Log Duplex DeciTrig slide rule. The latest patent dates from 1940, and Mr. Lundin was already a graduate student in Chicago by 1950, so the timeline for dating this is pret

 

Awesome sign with embossed lettering It says A. M. Wentworth Scientific Optician Portland Maine, 546 1/2 Congress street Portland Maine, and a large pair of early eye glasses. The sign is in Very Good