Avoid direct sunlight and heat sources

Direct sunlight can rapidly heat surfaces and cases, as well as encouraging fading and ageing in some materials.

Do not leave gear for long periods in front of windows, in closed vehicles, beside radiators or on equipment that produces substantial heat. A case does not remove the problem: it may slow temperature change, but it can also retain heat.

If an item has become very hot or very cold, allow it to return gradually toward room conditions before use or adjustment.