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2.4-inch gas x-ray tube

2.4-inch gas x-ray tube

American
circa 1896
3.3-inch gas x-ray tube

3.3-inch gas x-ray tube

American
circa 1902
3.6-inch gas x-ray tube

3.6-inch gas x-ray tube

Macalaster-Wiggin Company
circa 1902
3.6-inch intracavity gas x-ray tube

3.6-inch intracavity gas x-ray tube

American
1905-1910
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
4.2-inch gas x-ray tube

4.2-inch gas x-ray tube

Macalaster-Wiggin Company
circa 1902
4.5-inch gas x-ray tube

4.5-inch gas x-ray tube

American
circa 1905
4.8-inch high frequency x-ray tube

4.8-inch high frequency x-ray tube

Macalaster-Wiggin Company
circa 1915
4-inch gas x-ray tube

4-inch gas x-ray tube

American
1902-1910
4-inch gas x-ray tube

4-inch gas x-ray tube

Macalaster-Wiggin Company
1902-1905
4-inch gas x-ray tube

4-inch gas x-ray tube

American
circa 1897
4-inch gas x-ray tube

4-inch gas x-ray tube

American
1902-1910
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