CENTRAL SCIENTIFIC CO., CHICAGO, U. S. A. 83 … Nos. 5204-5331. No. 5357. No. 5347. 5331. Platform, of iron, 3 */& inches in diameter, with heavy screw for clamping on supports or tripods. Useful for supporting burners, etc $ 0.25 5204. Rings, Concentric, six inches in diameter with two removable rings, with heavy screw for clamping on supports…
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![An illustration from [Catalogue of 19th century British plated and unplated art metal-work]. (1880)](https://img.insideoutlibrary.com/img/200/met-p16028coll13_2388-70-1.webp)
