Adjustable bubble protractor used with a number of popular Jackson Safety® Curv-O-Mark® tools, including #4, #6, #7, #8, #20, and #33
Protractor covers 180-degrees thru two 90-degree quadrants
Made of durable lightweight cast aluminum
Reads in 2.5-degree increments
Curv-O-Mark measuring tools by Jackson Safety have been relied on by pipe fitters and pipe welders around the world for many years. Curv-O-Mark has earned a reputation for high quality and provides necessary precision for numerous welding tasks.