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Jobber - 6
The Jobber 6 is the first of its kind to use feet, inches, and fractions to perform precise calculations to within thousandths of an inch. It is the most complete construction and mechanical calculator ever.
The Jobber 6 is the first of its kind to use feet, inches, and fractions to perform precise calculations to within thousandths of an inch. It is the most complete construction and mechanical calculator ever.