This project demonstrates a base 3 number system using non-numeric symbols. The odometer displays the value of the symbols being shown. You can either manually set the symbols on the odometer using the (+) and (-) buttons, or you can have it count automatically in base 3 by clicking the "go" button. This is very similar to the odometer widget on the code.org website.
Thanks to paulfuller75 for the original odometer simulator. I have adapted it to be a base 3 number system and added a "value" variable that displays the decimal equivalent of the base 5 number, and a " Text" variable that pulls from a character set based on the decimal value.