Thermometer for PowerPoint 1.1

Thermometer for PowerPoint (current version: 1.1) is a free add-in that creates a thermometer style bar in the bottom area of the slide that shows how much of a presentation has progressed and how much more is remaining.
It's a very simple add-in and using it is so easy: one click on an icon and you can add or update your thermometer; another click and the thermometer is gone!
The add-in installs a toolbar inside PowerPoint with four icons.