1950s DuPONT Auto Painting JOB ESTIMATOR circular slide rule Slide Chart—profits

This Job Estimator circular slide rule was produced by DuPont Duco-Dulux to help those in the automobile refinishing business to make the right profit on every job. Helps you figure overhead, profit,  cost of labor and materials, selling price, etc. Not dated, but graphic style suggests 1950s. 4 5/8” diameter. Slightly worn condition.

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