| 摘要 |
A hand-held calculating apparatus for solving a plurality of formula-related calculations and conversions commonly encountered in the machinist trade having a visual display and a keyboard including key groupings denominated as basic arithmetic and memory, function and conversion, timing and clear and on/off keys. The function and conversion key grouping permit a user to automatically convert among dimensional measurements in different systems while continuing to utilize an earlier calculated result in the present calculation.
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