NOTCH-TYPE ROUGH CALCULATION COUNTER
PROBLEM TO BE SOLVED: To provide a portable notch-type rough calculation counter which provides a rough estimate of numerical addition or subtraction with a simple operation. SOLUTION: In the notch-type rough calculation counter, a body with a scale has a rail with notches, a slider for indicating a...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a portable notch-type rough calculation counter which provides a rough estimate of numerical addition or subtraction with a simple operation. SOLUTION: In the notch-type rough calculation counter, a body with a scale has a rail with notches, a slider for indicating a numerical value is provided in the rail, a value for a unit of the scale is counted by using the slider, so that an added or subtracted numerical value can be acquired. COPYRIGHT: (C)2010,JPO&INPIT |
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