I also have a Starrett combo square, the one with the hardened head. I bought it 16 or 17 years ago and it's still dead square. I imagine it will still be dead square by the time I retire.
Thank you for the video. I've been using Starret products my entire career. I was a layout person for a large steel and bridge building company. I always wondered how they were built
Just bought the forged hardened head version. Thanks for the video. Now i know what comprises the value I'm getting for my hard earned money. I'm currently warming to the idea of getting 150 mm adjustable tri square..