I needed a very small compass to fit in a 1/2" gap, so I ordered the 10 mm. I almost immediately received a call from a kind employee at Hard Case Survival who asked what I was using the compass for and offered to send over a couple different samples that might fit my need. It was a really great customer service experience and the package came within just a few days!

3 Star for this one as both came with a bubble which effects accuracy. Amazed as how tiny it is. With smaller size it will be harder to see, so keep that in mind.

This is a perfect button compass for EDC survival kits or emergency preparedness. It is perfect to attach to a paracord bracelet, survival tin/kit, or keep in wallet. it offers the performance of a high end button compass like the SAS Button compass but you will not cry over losing it.