i000000 32 PIECE DATOLITE LOT CALUMET KEWEENAW HOUGHTON MICHIGAN MINING COPPER MI MICH s&H 2.50 first class... We have specimens from many Michigan Copper Mines including the Nasseau, Superior, Os

 

These 5 slides are all thin sections of rock and best viewed under polarised light. The most striking image is the only slide without any information ,but looks to be a form of granite. The next is Fe

 

Bruning Model 2700 Drafting Machine Charles Bruning Drafting Machine with 2 Scales (12" & 18") - 2711T Style D - 10 Grads./Inch Good Condition - Model 2700a - Length 24" x 30" - Serial NO 90652305

 

Appears to work just fine Barometer, thermometer, hygrometer Small crack on barometer...see pics Approximately 7 inches long and 4 1/4 inches tall As seen on Real Milwaukee with Tony ClarkQuestions ca

 

"CENTRAL FUEL COAL" SCATTER TAG.......

 

Here are two useful parts. Both marked MONAX and one is 2 1/16 high and the other one is 2 3/8 inches high. Both in excellent condition, no cracks or fleabites. Good original pieces for your miners sa

 

17 DIFFERENT &nbsp U.S.STEEL COAL CO. MINING STICKERS GREAT CONDITION

 

I found this deep in a box in my garage. I don't remember where I got it, but here it is in beautiful shape.

 

Original Keuffel & Esser Planimeter in original box. Germany. Posted with eBay Mobile

 

rowingboat2012 Store STUNNING ANTIQUE VICTORIAN COW BONE RULER W H HARLING LONDON