Welcome to the MicroTim â¢ Altimeter Website !! Why use a MicroTim Precision Digital Barometric Altimeter / Barometer / VSI? MicroTim is FASTER and MORE ACCURATE than any typical GPS unit or wristwatch altimeter. Â· Lightweight and portable. Easily moves from truck to backpack to recreational vehicle. Dimensions 3âx1.5âx3/4â. Weighs less than 2 oz. Â· Large Display (3/8â tall numbers).
This type of headache occurs while sleeping and is also referred to as alarm clock headaches because they occur at the same time every night. Causes range from changes in small vessels in the cerebrovascular system to previous head injuries. This type of headache is more common in people over the age of 50.
Headaches that awaken one from sleep can indicate something serious, as people suffering from brain tumors have complained of headaches awakening them. However, a headache arousing one from sleep can also be caused by something other than a brain tumor. The pain can be described as dull, aching, or throbbing. Over time, the headaches may become more frequent, increasing in severity, and eventually be a constant occurrence that is not easily relieved.