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Kit, Photo Interpretation, Felsenthal, Type BS-9A, partial
[Trade catalogs from Packard Instrument Co.]
Winkelmessinstrumente / Bearbeitung, Franz Adrian Dreier
[Trade catalogs from American Meter Co., Inc.]
[Trade catalogs from Ralph C. Coxhead Corp.]
Warshaw Collection of Business Americana Subject Categories: Scales
Lawrence Oschinsky papers
George H. Clark Radioana Collection
Brannock Device Company Records
Outline of ranging methods and measuring instruments in use at present of Army Ordnance, Inspection Division.
Armstrong Manual Training School yearbook
[Trade catalogs from James G. Biddle Co.]
"Test and Measurement Instruments and Systems"
Measurement & Instrumentation
US 2,959, 347/Means for Extending the Useful Frequency response of Measuring Instruments
Warshaw Collection of Business Americana Subject Categories: Aviation
Warshaw Collection of Business Americana Subject Categories: Instruments
[Trade catalogs from General Hardware Mfg. Co., Inc.]