Prior to making your measurement be sure to loosen the set screws, this will allow the templates to pivot and slide back and forth on your 1 X 3 support board (note: you will need to supply your own 1 X 3 and cut it to length, I cut mine approximately 3 1/2 inches shorter than the width of my treads and that worked well for me). Push the templates snug against your skirt board then tighten the set screws to lock the templates in place. Be sure not to overtighten the set screws or you may damage the plastic. Good Luck!
Once you've adjusted each side to the exact angles of the wall against the tread, then you transfer it to the tread; simply lay both templates still attached to whatever piece of wood you've used to connect them, and draw the lines onto the new tread. As for cutting the oak tread, it depends on the composition if it's a laminate. If it's solid oak, I would use a good sharp blade in your (hopefully) Sliding compound miter saw.
Yes any angle you need
You can find many YouTube videos on how to used it. You want to use it to mesure exactly how the step size is. You see every step on a ladder is different. That is why you need this tool. To make sure you cut every step up the ladder the correct size. You first make the tool loose by loosening up the screws. You push it in agains the walls of a step and the back. Then you make the tool tight so you can preserve the size and angles of that step. You pull the tool without changing the shape of it and transfer that to the new step that you will cut and the new step will fit there perfectly like a piece in a puzzle.
Yes it’s designed to measure the with of the treads it’s real easy to use make sure you buy a real straight board to fit the temple If your treads are round in the front or the side it will work .
Mine are 1". That's what I cut off for the retread. Be careful, I ruined one retread for not taking into account the nose size. Rookie mistake.
I searched for "stair tread template" and found it :)
Will work on any size riser as long as the height of the riser is taller then the height of the plastic piece. If the tread doesn’t hang over the riser it won’t matter. Plastic piece is 12 inches tall so it won’t fit between the treads if top one hangs over. This tool is just a simple story board to get an exact fit with little gap. Would definitely use again. Can use also inside of window frame measurements for blinds or any other inside measurements. You can always cut the plastic piece off to fit between your treads on your saw. It is just sturdy plastic. Ideal way to use is to install bottom tread then riser then next tread then next riser and so forth working your way to the top. Hope I didn’t confuse you
The description of the item suggests using a 1" x 3" piece of wood. You can use any width wood with a 1" thickness. The length of the wood is up to your application.