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Calculated Industries Model 9130 Time Master II

• Type: Four-Funtion Electronic Calculator with Sexagesimal Time Arithmetic
• Size: 6 x 6.5 inches / 15 x 16.5 cm
• Date of Manufacture: June 2005

With ruggedized rubber outer case and instruction pamphlet.

What time will it be four hours, fifty-four minutes from now? How long did I work today? How many 30-second video clips can I include in a 24-minute feature if I leave 2 seconds between them? Until some genius comes up with a better way of marking time, these sorts of questions will be a plague on our minds. Few calculators handle time-oriented questions, and most of those are tricky to use at best.

Calculated Industries comes to the rescue with the Model 9130 Time Master II. The Time Master treats a time value in hours and minutes like a traditional calculator treats a decimal number. Times can be entered in AM/PM format, as a 24-hour time, or as an arbitrary duration up to 10000 hours. Calculate the duration between two events (and then multiply that by your hourly rate). Divide an interval into several parts, or divide that interval into shorter intervals to see how many will fit.

Will also perform as a traditional 4-function calculator and includes a stopwatch with Split and Lap functions. Nine independent memories can store decimal numbers or times (including times captured from the stopwatch), and one memory acts as an accumulator, summing any subtotals you derive.