Chances are you already need a steel ruler for your fixing and making tasks, so why not use one that can do much more than ...

The former two are my quick measurement tools of choice, when you see a product dimension in one of my Hackaday pieces it will have been measured on one of them. The plastic Vernier caliper has ...

You measure as carefully as possible ... these neat snap-on attachments for digital calipers come in. [Chris Long] came up with the 3D printed tools to make this common shop task a little easier ...