24" L Shaped Carpenters Square?
Answers:
Some of the numbers are just a ruler. Others are used to measure rise and run when building stairs or trusses for a roof. Yet others are used to make different mitre cuts for other carpentry applications. Hope this helps make more sense of the square.
Other answers:
They should come with an owners manual... but they are also called a framing square so a search by that name may render more results. Anyway, the thing is used to create all types of roofing angles for the type of pitch you want on a roof, they are also used in stair building and basically every type of construction... this may help a little bit.
anyone have instructions on installing a culligan gold series water softner on a well system?