Teledex DTXDD2362 2-Line TrackBack Large Desktop Calculator

These are quite hard to read from the angle you would normally use them at. It seems like they made the screens larger than normal calculators but didnt increase the voltage of the battery so the contrast is not high enought to be easily read.

The Owner's Manual that came with it is very limited. It does not describe how to do all of the calculations. It has a tracking feature which saves your work but there is no way to clear it to begin another calculation. How do I return it for credit or exchange for another simpler calculator.