Structural beam layouts and marking angles or saddles on pipe and tubing are a snap with the MITER MARKER. The MITER MARKER is sold in a sturdy polypropylene lockable case (p/n 8901) for lasting protection.
eBay
Flange Wizard Miter Markers Features newest on/off magnet technology. Unique design allows you to telescope out over existing welds to layout angles or change the angles of pipe fittings. Designed to accommodate 1 1/2 inch to 18 inch pipe. Contains 360 rotating shaft with a built-in leveling vial. Constructed of anodized aluminum Pack of 1 Made in US
eBay
5 tools in 1. This item can be used as a framing square, try square, miter square, angle finder, or a saw guide. The only portable framing square for 16 In. and 12 In. on center layout that can be used for all construction and measuring needs. This lightweight model is adjustable, portable, can fit in your toolbox, and includes an Allen wrench to re-adjust the tool to a perfect 90 Degree. The all-aluminum construction product also has highly visible etched markings and comes with an instruction book.
eBay