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/ 29
1 gallon glass bottle "BENZENE" empty

1 gallon glass bottle "BENZENE" empty

Central Scientific Company
early 20th Century
2 bakelite pulleys fork-mounted on rods

2 bakelite pulleys fork-mounted on rods

Central Scientific Company
circa 1929
2 laboratory end supports for holding a single horizontal rod

2 laboratory end supports for holding a single horizontal rod

Central Scientific Company
1900-1925
2 printed centimeter scales

2 printed centimeter scales

Central Scientific Company
early 20th Century
3.8-inch hot cathode high vacuum X-ray tube

3.8-inch hot cathode high vacuum X-ray tube

Victor Electric Company
1920-1925
3 laboratory end supports for holding a single horizontal rod

3 laboratory end supports for holding a single horizontal rod

Central Scientific Company
1900-1925
4-inch heated cathode high vacuum x-ray tube

4-inch heated cathode high vacuum x-ray tube

General Electric Company
circa 1925
4-inch heated cathode high vacuum x-ray tube

4-inch heated cathode high vacuum x-ray tube

General Electric Company
circa 1925
4-inch heated cathode high vacuum x-ray tube

4-inch heated cathode high vacuum x-ray tube

General Electric Company
circa 1922
5-inch heated cathode high vacuum x-ray tube

5-inch heated cathode high vacuum x-ray tube

General Electric Company
circa 1925
7-inch heated cathode high vacuum x-ray tube

7-inch heated cathode high vacuum x-ray tube

General Electric Company
circa 1920
7-inch heated cathode high vacuum x-ray tube

7-inch heated cathode high vacuum x-ray tube

General Electric Company
circa 1916
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