So it's time to buy some new wheels. What hardness should you get? What do the durometer numbers mean? What's a durometer anyway? Don't worry, we got you. All skateboard wheels are made from urethane, ...

It uses the same soft spring as the A Gauge, but the conical gauge needle of the D Scale. Because the spring is soft, the B Scale gauge needle does not puncture the skin of the wheel surface ...

They then use those two factors — likelihood of a collision and the potential devastation that would result — to rank an asteroid on a 0-10 scale that ranges from no threat at all to all-but ...

That makes them easier to read than the scale on a stick-type gauge. Some digital readouts light up. That's handy for checking pressure in low-light conditions. Dial gauges, the other main type ...

That makes them easier to read than the scale on a stick-type gauge. Some digital readouts light up. That's handy for checking pressure in low-light conditions. Dial gauges, the other main type ...