KL-1 Circular Slide Rule description This CIRCULAR SLIDE RULE (model KL-1) is 50 millimeters in diameter (approximately 2"). It is intended for performance of trigonometric and mathematical operations

 

measures 20 cm long , and 7.5 cm wide in diameter , this is new , NOT old , please see photos , any questions please ask , i have lots of other items listed .. ..please see my other items and add me t

 

You are bidding on a used and fully functional MF-3000 melting furnace. We used this for a total of 4.5 hours between 6 different sessions. Both crucibles have been used for silver. This kit includes:

 

Well cared for and stored since 1966, nearly new condition. A good vintage piece for any Radiologist. The radiological tables and circular slide rule is in excellent condition and comes in plastic sle

 

No handle. I see no damage. I do not know if it works. Sold as is for parts. Used condition with wear. 4 inches tall. Weighs 4 lbs. Mining tool explosives. ____________________________________________

 

Here is a very-good-condition, vintage wooden slide rule from Keuffel & Esser Co. that comes with its original leather case. The slide rule measures about 10.5 in. long and features equivalents an

 

If you collect drawing instruments then this may interest you. The item is a small set of vintage instruments manufactured in brass with some steel on the points. They come in a polished wooden box me

 

SPECIAL VINTGA AND VERY COLLECTABLE ARISTO SLIDE RULE SCHOLAR #803 NEW OLD STOCK, IN PERFECT CONDITIONS. IT COMES IN ITS ORIGINAL CASE AND BOX WITH THE ORIGINAL MANUAL THAT PRINTED IN SPANISH FOR THE

 

Apothecary Steel scale weights with Bakelite Box. From 10 mg to 100 gr. Made in USSR circa 1960's. Good condition, some little wear. Please, See The ScansGreat Addition To Your Collection!!! Happy Bid

 

The Kit Includes: 1 - E-Z Sluice Box. The Sluice Box is black, 2 1/2 inches deep, 24 inches long and 7 inches wide. - The lightest, most portable sluice available. Great for backpacking. Made of polyp