Description
TIME CALCULATOR
Believed to be the only pocket calculator in the world designed specifically to calculate time. It enables more rapid and more accurate programme timing computations. It adds, subtracts, multiplies and divides in any time format. It handles ‘points in time’ in both am/pm and 24 hour formats eg 1635hrs, or 7:16pm, and also ‘time amounts’ in any combination of hours: minutes: seconds, or decimal amounts of any of these (eg 3hrs: 11mins: 06 seconds, or 3.185 hours, or 191.10 minutes, or 11466 seconds).
Any of the different formats of time amount can be used in the same calculation and single key operations convert between all the possible formats. The calculator warns you if you attempt an illegal operation (eg multiplying a ‘point in time’ by a ‘point in time’). ‘Time amounts’ can be added to, or subtracted from a ‘point in time’ - for example in calculating back timings to junctions.
Entries are made by keying the numerical value then ‘labelling’ with the appropriate keys. A user’s guide supplied with each calculator gives many illustrations of usage.
‘Hourly rates’ key facilitates rapid calculation of costs. There is a stopwatch timer with lap facility, and the calculator also handles standard mathematical computations. It uses long-life LR44/A76 type button cell batteries (typical life 2 years), has auto battery shut-off and is supplied in a vinyl carrying case. Dimensions: 140 × 85 × 15mm. Spare batteries 59-140 are stocked - see index.
Mk.2 version has begin, end and duration keys for easy tagging of time points in calculations, also a preferences key for establishing various calculator settings, and a log facility that records up to 12 data entries or timer results. Timer facility additionally operates in countdown mode. 10 storage memories. Dimensions: 140 × 74 × 10mm.