So I’ve assembled a collection of micrometers and vernier calipers of varying quality, and it’s time to dive in and measure some very small things. Some of you will be metrology enthusiasts ...

The display on calipers can be non-graduated meaning that the caliper has no display, dial or analog display, digital display, column or bargraph display, remote display, graduated scale display, or ...

I'm not sure what size the bolt is, so I'll need to measure it. I've got the vernier caliper as it allows me to take really accurate measurements. I'll then need to get the new bolt and replace it.