McKesson Metabolor, Model 185, circa 1950

From the NIH Office of History Website.  Described as:

“Black enameled metal cart with single drawer which holds small accessories. Metabolor is tan enameled metal with chrome accents. Display dial on back. The left side has an oxygen fill line and knob; the front has a canister, stainless steel hose bracketed to torn black rubber hoses; gauges; and recording area with paper.”

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