Metal Manual Focal Height Gauge for Lasers hidden Lasers are designed to work

Lasers are designed to work on flat surfaces and you must "trick" the laser into engraving a tumbler

instead of obstructing it behind the frame of a bulky laser machine

they’re set by your local government and must be paid by you

plug it in a standard electrical outlet and you are all set

Then print "2nd Mirror TOP

Metal Manual Focal Height Gauge for Lasers hidden Lasers are designed to workHigh quality CNC Machined focal distance gauge ruler. Measures from 27mm to 4mm distance under laser nozzle. Fully metallic. Comes with a magnet on a ring for easy storage, just leave it hanging on the metal chassis of your laser machine! Note this gauge is also included with Ramp Focal Gauge Kit