I have the Fons & Porter wedger ruler... It doesn’t say on it what the degree it is but I know it is 4 inches at it’s widest & 2 inches at the narrow end & 12 inches long... if anyone is good at math could you please tell us what degree it is? I haven’t even gotten to use it yet so I don’t know if it will make a circle yet... hopefully tomorrow I will get to play with it! Just got it today...