Not all it could have been
I purchased one of these compact squares with the intent of using it to draw lines a specific distance from the edge of a work piece. The tool works fine for this purpose as long as the line is no more than more than 4 1/2 inches form the edge in right angle mode or 3 7/8 inches in in-line mode. The tool is small so these are acceptable limitations.
There are what I perceive as two design flaws. First, the 45° setting can be used securely in only one position. The chamfer is way too thin in the opposite direction. The tool could have been designed to be 3/4 inch thick with an increased lip on the chamfered side. Second, there is no accurate way to transfer the setting by which the edge to be cut can be transferred from the tool to set the fence on a bench or table saw.
Given these caveats, the tool is a nifty pocket-size right angle and miter gauge.