Guess using a simple metric measuring tape or ruler, is now just too much trouble or too far beyond OldFashioned for most folks.
If you ain't got an outrageously complicated (ie near useless) WifiConnected 3DLaserMeasuring app for your stupid phone, you just ain't cool.
Measure the damned TorxHead before you go to the hardware store,
then measure the damned TorxWrench\Socket before you put money on the counter & buy the wrong tool.