The Troika Construction Stylus Tool pen is a godsend to all construction workers and desk dwellers alike! Contained within this clever little writing instrument is a scale rule with 4 different scales - 1:20, 1:50, 1:100, a spirit level, a slotted screwdriver, a Phillips screwdriver, a capacitive stylus and of course a ballpoint pen. No more dirty smears on the screen of your mobile phone or tablet!