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Tire testing machine. Washington, D.C., May 20. Testing wear and tear on tires with this tire testing machine at the Bureau of Standards is W.D. [?] hold, the machine simulates road tests traveling from 20 to 60 mph, the only difference is that the load on the tires is heavier than the normal weight
Public domain

Tire testing machine. Washington, D.C., May 20. Testing wear and tear on tires with this tire testing machine at the Bureau of Standards is W.D. [?] hold, the machine simulates road tests traveling from 20 to 60 mph, the only difference is that the load on the tires is heavier than the normal weight

Harris & Ewing · 1937-01-01 · photo, print, drawing

From the collection of Library of Congress. Free to download, adapt and use — no permission needed.

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washington (d.c.)district of columbiaglass negativesunited states
Credit lineTire testing machine. Washington, D.C., May 20. Testing wear and tear on tires with this tire testing machine at the Bureau of Standards is W.D. [?] hold, the machine simulates road tests traveling fr. 1937-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
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