| 摘要 |
A global time indicating calculator has a rotating dial for calculating global standard time and advanced time in various international time zones. Indicia printed on the face of the dial and corresponding sections of the face of the calculator can be easily referenced to determine time of day at selected locations throughout the world. The calculator is used by dialing present time and reading the indicia to determine time at a different local. The dial has an outer annular ring marked with numerical indicia and scale indicia along its circumference for measuring time at selected increments. The time indicia is matched with selected geographical region to calculate the time of day worldwide.
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