BlitzIndicator OLE Control is a self-registered ActiveX control. The component is designed for displaying custom representation of a number. All what you need to do is loading a skin.
To set a number call only one method of the control. If the number value is NaN (Not a Number), for example after division by zero, the control will display error message automatically (the message skin also must be loaded). So, you may not trace mathematical errors. The component is free of accuracy errors for the double precision numbers! | 
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