Chicago Apparatus Co Chicago ILL....Is a D.C. Milvay Galvanometer. W.M. Welch Galvanometer Chicago, Ill. Nice condition.

 

Bird Electronics VSWR Slide Rule, (Voltage-Standing-Wave-Ratio) I will combine postage on Multiple Purchases. I charge actual shipping charges. Be sure to add me to your favorites list! Check out my o

 

This auction is for a hard-to-come-by CLEAR glass fish bottle, made using the same molds as the amber colored Eli Lilly & Co. of Indianapolis, IN cod liver oil fish bottles of the 1920’s. This h

 

VINTAGE MINIATURE FOLDING BRASS COMPASS WITH MAGNIFYING GLASS DIMENSIONS: FOLDED = 1-3/8" x 7/8" OPEN = 2-5/16" COMPASS WORKS! COMPASS GLASS AND MAGNIFYING GLASS ARE CLEAR. SAYS: "ENGLAND" ON THE BACK

 

ANTIQUE DRAWING INSTRUMENT BOX-STANLEY A 4 inch x 3 inch hard leather covered box , velvet lining with 3 original drawing instruments fitted inside - stamped STANLEY and owners initial FBH This small

 

Keuffel and Esser, Leroy Lettering Set This is an old set from my father. I don't know anything about it. If you have any questions, please send them to me and I will try to answer them the best I can

 

"Marble Scope" is a wonderful handheld marble kaleidoscope by Sherry Moser. This scope has a 21.85mm removable marble as the object. Any marble of this size could also be used in this scope as the obj

 

SENSATIONAL, SCARCE, OLDER, AUTHENTIC, ORIGINAL, VINTAGE, "SPUTNIK WEATHER STATION / BAROMETER", MADE IN WEST GERMANY, as shown! See all 7 images below including close-ups! HAS A CLEAR LUCITE ORB WITH

 

This is a medicine case complements of the Lydia E. Pinkham Medicine Co. and a Pyrex tube with cork. The medicine case contains three glass tubes with cork stoppers. It measures approx. 2 5/8" and the

 

Vintage brass drafting and compass set from Milan, Italy. I know nothing about this whatsoever. It's in its original box which has a lot of wear. Needs to be cleaned. Box measures 7-3/4" x 3-1/4" x 7/