Three vintage rules - Fisher Governor Company, Marshalltown, Iowa U.S.A. - Pickett - Fisher Control Valve Sizing Rule. In leather case w/two supplements Sterling U.S.A. Metric Converter Vintage wood C

 

Early 20th century magnifying glass with its own 3 legged stand - probably for carrying in the field for map reading or the examination of specimens perhaps. The glass screws up and down in its housin

 

4-1/4" tall, 2-1/16" diameter old clear glass chemical/laboratory bottle having raised frosted letters on front - Ammonium Chloride NH4 Cl Embossed on bottom - W. T. Co. K U.S.A. Has a glass stopper,

 

This is for an apothecary or pharmaceutical jar we found in grampa's house along with his old tools we are also selling in another auction. Not sure how old this is. May be vintage I don't know. There

 

Vintage Springfield Eagle wall mount weather station with thermometer, barometer and hygrometer on 3/4 inch thick wood and measuring 16 inches in length and 7 inches in height. All in really nice cond

 

SUNDIAL I recently acquired a large collection of vintage compasses and other similar scientific/field instruments from an estate. These are not my area of expertise but they all seem to be in working

 

VERMONT COMFORTMETER Conant Custom Brass/Division of Weems & Path This auction is for a brand new in the box Vermont Portable Comfortmeter which monitors temperature and humidity while featuring t

 

You are bidding on a Universal Shunt Type 4309-B manufactured by H.Tinsley & Co, London. This piece of equipment would have been used with a vibration galvanometer to provide a variable resistance

 

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

 

Beautiful lady's desk magnifying glass measures 5" long and is in excellent condition with no issues. Comes in its original box. This is an older piece and a must for your collection. Please look care