Since the recent change to the Ontario Discount Rates for 2014, we have updated our website calculator as well as our iPhone®, Android™ and BlackBerry® Apps.

The Android™ app is available immediately for download and the BlackBerry® and iPhone® app should be ready soon. Be sure to update the app when you receive the notification on your smartphone!

Watch for your hard copy of the McKellar Slide Rule in the mail soon!