High-quality black-and-white photographs of large old machines and tools

Mesta Machine Company two-stage air compressor. West Homestead, PA. 1905/1925.

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That's a sawhorse...

Gang drill in the McKees Rocks Machine and Erecting Shop of the Pittsburgh and Lake Erie Railroad Company. McKees Rocks, PA. July, 1904.

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Machine shop lathe at the Homestead Steel Works. Homestead, PA. July, 1946.

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Rolling mill equipment at the Homestead Steel Works. Homestead, PA. July, 1946.

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Machine molded staggered tooth gears at the Mesta Machine Company.

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Corliss engine on erecting floor of the Mesta Machine Company. West Homestead, PA. 1905/1925.

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Construction at the Mesta Machine Company. West Homestead, PA. July, 1908.

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Interior view of Carnegie Steel Company's Homestead Steel Works. Homestead, PA. 1893.

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Mesta Machine Company engines. West Homestead, PA. 1905/1925.

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