Implement independent control of positive and negative half-cycle phase angles using separate trigger-time constant-setting PWM channels.

I tested several protractor apps, and they all worked well enough. They display a protractor over what your phone's camera sees, allowing you to measure angles in the real world.

Researchers at ORNL have developed a tool that gives builders a quick way to measure, correct and certify level foundations. FLAT, or the Flat and Level Analysis Tool, examines a 360-degree laser ...

April Wilkerson demonstrates how to make a growth chart ruler with wood burning tips for a personal touch.

Why not use a multitool ruler that can do more than most? The ten-function Tiruler packs a protractor, caliper, bubble level and even a wrench.

Honestly, the volunteers make it happen and literally a tree from the community, from Elkton is now being put in my house. Just wow,” Hanna said. The branding is visible in Hanna’s closet.

The General Tools Angle Protractor #17 is pretty solid when it comes to picking out angles in carpentry and woodworking. It's made of stainless steel and has a square head, which makes it both tough ...

Science microscope biology Researchers use a microscopic ruler to measure one atom-wide distances between molecules Advanced techniques can be applied to looking into the infinitely small world By ...

Beginning with a quilt math class, Georgia demonstrates how to speed-cut featured quilts.

An angle ruler, also known as a protractor, is a simple tool used to measure angles. A protractor is a semicircular device with degree markings to precisely measure the size of an angle.