Boomgood45 Degree Miter Square Machinist Engineer Square with Base DIN 875/2 Angle Ruler Hardened Steel 6x4 Inch, Silver

Dead accurate 45 degrees, both inside and outside. The platform it sits on is also perfectly flat. What more could you ask for? If you need a small 45 degree angle for set up, this gets the job done

Accurate by my my Starrett combination square. Needed to do a bunch of 45 degree setups. This made it easy and quick.

I like it. It's convenient.

Nice quality and at a good price. Was just what I needed.I need to finish wiping the cosmoline off.

Love this! I also have the right angle or 90 degree that husband got! Fantastic quality! Just make sure to read the dimensions of it so u order the right size that will work for u

Great 45 degree square. Would recommend to any machinist.

I was excited to Open the box. when I touch it my fingers and hands are all sticky stuff and oily. May be I can clean it and use it. I am not sure if I can completely clean it. It's so disappointment.

Accurate, metal is heavy and thick enough to be very durable