Here is a vintage Audiometer from Zenith. It is a model #ZA-113A, and seems to be intact and complete. With the metal case in the closed position, it measures about 12 1/2" x 9 3/4" x 7 3/4". I have n

 

Vintage Tin Miners Mining Oil Wick Lamp Original as found uncleaned condition, Still has 100 year old patina. It does have a few small dents in side and front of chimney. Can be seen in pics. Body mea

 

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

 

found amongst my late father's possessions Milbro Microscope x 250 In its original box, tissue paper, glass strips and instructions It looks as if it has never been used; I am 70 next birthday and I d

 

Rare small Atlas Powder Company tin. Measures 1 1/2" X 1 1/2" x 1"Some wear but in good condition.Please see the photographs

 

Bausch & Lomb Optical Kit For sale is a used, Bausch & Lomb optical kit. This kit come with all the pictured accessories. As you can see from the photos above, the case is pretty torn up. It h

 

4 3/4" and looks really nice. Unfortunately, there is a crack across face. The setting knob is also loose. I don't know if this can be repaired or maybe used for parts. ??? Please check the other item

 

Vintage hand blown crystal glass barometer,made in the Czech Republic w/ solid wood back and brass hanger...Excellent condition w/ no damage...Measures,14" tall X 4 1/2" wide X 4" in depth...Will ship

 

If you collect or restore old radios, crystal sets, early scientific apparatus, vintage test equipment, military surplus, or other unique old technical items, keep me on your favorite seller list. I a

 

Being offered in this listing are two Architectural Engineering Triangular Scale Rulers; Central No. 910 & 912 U.S.ST'D. These are pre-owned triangular scale rulers. Together, they provide 12 diff