The integral absolute vertical and horizontal levels are permanently incorporated into the digital goniometer arm * Goniometer reads 0-180 degrees on LCD screen * Has ability to freeze angle measurement * Powered by 1 9V battery * Goniometer exterior is powder-coated steel with inch/cm marks screened onto arms * Digital angle reached in center * Horizontal and vertical levels to indicate level or plumb starting point *.
A**T
nice and handy
does what it says. it was gift to my cousin and she loved it. nothing much to say. it is a good product
