its called a planimeter , in original box looks perfect to me has instructions booket also for mathematical engineering instrument no reserve * I always combine shipping wait until invoiced before pay

 

6 DIFFERENT NICE NICE CONSOL COAL CO. COAL MINING STICKER GREAT CONDITION IF YOU BUY MORE THAN ONE SET, THERE IS DISCOUNTED SHIPPING!! 1-5--- $1.00 EACH ADDITIONAL 6-10-- .50 CENTS EACH ADDITIONAL 11

 

YOU ARE BIDDING ON... cesco safety goggles dark lens for sunglass look, leather strap on nosepiece red swirl bakelite plastic frames, one chip on side of black part, but not too serious and does not a

 

Please read my terms and conditions first - the item description follows below. Please ask questions before bidding and look at all the pictures included with the listing. Also, if there is anything y

 

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

 

Here is a blank make your own slide rule kit from Dyna-Slide. There is a no 21 blank with a sealed envelope that I assume holds the hardware and an instruction book. Not a common rule to find, get one

 

Copyright 1939. B.F. GRIZZLE Posted with eBay Mobile

 

You are bidding on an Early Brass MICROSCOPE This microscope is in working order and comes with it's fitted mahogany case. All hinges and clasps are in order. When extended the microscope is 16cm tall

 

Vintage 'The Scaleometer' small optical measuring device, has a scale within the lense? Possibly Silver?

 

Vintage Scientific Steam Engine Cut Away Cross Section Up for auction is this vintage scientific steam engine cut away cross section demonstration apparatus usedfor teaching the maker is unknown possi