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Use as an altimeter

Before starting your climbing tour or hike, for instance, adjust the altitude scale using the ribbed ring, until the needle shows the exact altitude of your location. Exact altitudes can be found on maps, timetables, at railway stations, on hiking path signs, etc. thereafter the altimeter plus barometer will show the correct height as you climb up or downhill. Whenever you come to a point of known elevation, check the reading and make any small correction that may prove necessary. This will adjust the instrument for changes in weather conditions as you go along. The most accurate readings are obtained by holding the OPTI-TRECK horizontally and tapping the protective glass gently.

What is sometimes ridiculed as an obsession with gadgets or over-cautiousness, has sometimes enabled people to get back safely to base, prevented accidents and even saved lives in situations where human senses have failed, for example with the onset of sudden bad weather, fog, snowstorms or darkness.

Use as a barometer or barometer memory

Using the ribbed ring, align the red line on the protective glass with the indicating needle. The direction, extent and speed of the needle's movement in response to changes in atmospheric pressure provide the user with valuable information about future weather trends or changes. With the barometer scale, you can read absolute atmospheric pressure (QFE) and atmospheric pressure reduced to sea-level (QNH).The barometer memory facility enables you to store atmospheric readings, for example overnight or during a break, without losing the information about altitude above sea-level. With the  OPTI-TRECK altimeter plus barometer, you are always one step ahead of traditional radio, TV or newspaper weather forecasts. If you use

your altimeter plus barometer readings in conjunction with the rules of meteorology, you will be able to forecast weather in your region or location far more accurately than the media. As you will be able to distinguish between short and long-term weather trends or changes, you will be in a position to plan your trips with care and have the necessary information at your finger-tips during any excursion.

Movements of the capsule face generated by changes in atmospheric pressure are amplified some 860 times by a high precision mechanical drive and precision balanced indicating needle. All shafts are hardened and have rolled ends. 19 synthetic ruby bearings with olive-cut holes are employed to ensure long friction-free life. No lubricants are used, so you can count on superb performance even in the coldest climates. All optitreck products from aircraft instruments to industrial calibration standards are world renowned for precision and durability. So also is the  optitreck altimeter plus barometer. Each instrument is individually temperature compensated and calibrated by a highly skilled technician using state-of-the-art mechanical and electronic test equipment. No-compromise design and painstaking workmanship are followed by stringent final quality testing to further assure each instrument a long trouble-free life. You can always count on your  optitreck.