>Yes I guess you can compare it to a standing progress bar. The control must have properties like: Increase, Decrease, Temperature (get and set). (if the control is on a form in an app that is hooked up to a device that can measure body temperature I would like my body temperature to be reflected by the user control <g>, but that is not what I will be using the control for. I have a form with a numericupdown control where the user can set the temperature, the only thing I want the thermometer control for is for a visual effect.
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>I have created visual controls in the past by drawing the control in the OnPaint but I have never tried to use a bitmap as the "background" when I draw. I guess resizing the control is my only consern about this.

I think that given a vertical progress bar, it is just a matter of puting an image object behind with the "thermometer"-like shape (as in the link you sent). You can then put everything on a special control if you want to reuse the whole group but othrwise you can just use it like this. Is there anything more complex I'm missing there?

Regards,