Keuffel Esser

To make the necessary measurements, vertical parallel lines are drawn on the tracing connecting the two marks at each subdivision the height of the schlieren curve at each subdivision is measured with a machine divider ruler (Paragon 56 3278, Keuffel Esser Co., Hoboken, New Jersey), and transcribed onto a prepared data form. The form also contains spaces for such data as identification number, run type, Spinco E machine used, frames read, dilution from the original sample, location of the major component, density and temperature of the run, constants that require redefinition for the analysis of the run, and a brief descriptive statement that can serve to further identify the run. Most of this information can be optionally left blank if it is not applicable, and the program will automatically substitute the standard values or options. 

J. Kosar and G.M. Atkins, Jr. inventors Keuffel Esser Co., assignee ... 

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