sarboss

I have a number of compasses. The Silva's and the K&R's have held up well and haven't developed bubbles. This includes a Silva Ranger Quadrant with a machined aluminum bezel (just to point out how long it's been around). No bubble. I also own a Brunton Eclipse and a Brunton GPS compass. The Eclipse has been back once to have the capsule replaced and it developed a bubble in less than 6 months. The GPS model has also developed a bubble. Any compass can develop a bubble, but some brands appear to be more prone to doing so.