Angle of Spatula(θ Sp): Immerse a plane in the powder pile, pull up the plane vertically. The angle of spatula is the average between the angles formed of powder pile on the plane before and after ...

A technician often has to sketch or design ductwork and the other parts of an HVAC system. Sometimes you have to sketch the room or building you are working with. This means working with lines, angles ...

Anyone who needs to quickly and efficiently measure large distances might be interested in a new dual laser tape measure with auto calibration, digital spirit level, angle measure and companion phone ...