Category:Keuffel and Esser Portland Cement slide rule-2004.010.0464
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specialised slid rule for computing ratios of Portland cement raw materials, donated by InteliCoat Technologies | |||||
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Location | MIT Museum, Cambridge, Middlesex County, Massachusetts | ||||
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Media in category "Keuffel and Esser Portland Cement slide rule-2004.010.0464"
The following 3 files are in this category, out of 3 total.
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Keuffel and Esser Portland cement slide rule-IMG 5831-black.jpg 4,500 × 3,000; 351 KB
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Keuffel and Esser Portland cement slide rule-IMG 5831-gradient.jpg 4,500 × 3,000; 421 KB
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Keuffel and Esser Portland cement slide rule-IMG 5831-white.jpg 4,500 × 3,000; 352 KB