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https://oil-glup.ru/threads/nagrevaem-i-zharim-motornoe-maslo.63/page-4#post-6202
An engineering drawing for a Microfog test specification from Mobil Research and Development Corporation lays out front, side, and rear orthogonal projections alongside detailed component views. Three numbered parts make up the assembly, specified as stainless steel types 302 and 416, with dimensions ranging from fractional drill sizes to precision decimal diameters. The title block in the lower right corner lists drawing number RC 3643, job number 5525, and completion date December 1, 1972.