Stanley Fatmax Xtreme Retractable Utility Knife "measure area triangle" Questions

...measure the height while promo says tool will calculate height E Area Measurement*** shows rectangle only and not triangle Volume Measurement Area or Volume Rounding of Large Calculations Continuous ...

area of the blade should look very close to an equilateral triangle. make sure both notches of the blade are inside the handle. They notch into the thumb lever. good luck What a wonderful way to slice