Occasionally a bubble will become present inside the compass dial assembly. Small bubbles the size of an air rifles’ “bb” will general not be a problem in the field.
Small bubbles generally develop into bigger bubbles.
I visited the Silva website and found the following:
“We intend that our compasses are free of bubbles; however, if a small bubble forms in the liquid-filled capsule, it has no influence on the accuracy of the compass. Its appearance and disappearance are due to changes in temperature and atmospheric pressure. If a bubble larger than 1/4" in diameter appears, it is probably the result of a leaking capsule, usually caused by some form of shock damage, and the capsule will have to be replaced. In that case, just call our customer satisfaction department for a return authorization number and shipping address. From the U.S.A, call 1-800-572-8822 between 8 am-6 pm, eastern time. From Canada, call 1-800-263-6390.”
It is nice that a manufacturer of outdoor gear takes some responsibility. Expect similar support from Brunton and Suunto.
If you have a cheap compass purchased at WalMart…just buy a new compass such as the
If a liquid filled compass housing develops a bubble in a compass place it in a plastic sandwich bag. Don't take it back to the field, it will become a mess.