Compasses for various applications
China’s compass selection includes units employed as tools for navigation and direction and models for special applications. Currently, more than 80 percent of the turnout caters to promotional and professional applications. The rest are designed for a specific type of user. The line comprises electronic and traditional types, with the latter dominating output. Nonelectronic compasses: The category consists of baseplate and lensatic kinds. Accounting for 60 percent of nonelectronic releases, most models in the first group are meant for promotional or leisure purposes. Prices start $0.30. Options below $3 are typically baseplate designs with an ABS, acrylic or alloy housing, clear base, dial and magnetic needle. The majority uses magnetic induction. Extra attachments such as a ruler, whistle, flint, map scale, magnifying lens and LED lights are seen in some models. Upward to $8, midrange compasses are normally lensatic varieties with copper, brass, aluminum or zinc alloy enclosures. Many are suitable for professional outdoorsmen. More expensive pieces follow military standards. Such products adopt copper or aluminum for the housing, which is sealed for water resistance. To enhance navigation, electromagnetic induction is employed. Digital compasses: Most units have round and rectangular shapes measuring 4x4 to 7.5x13cm. These can be worn around the user’s neck or wrist, or attached to a backpack. Digital compasses are priced at least $5. Quotes increase depending on the shape and built-in functions. Low-end versions with LCD screens smaller than 5.5x5.5cm are available for $5 to $10. Because of their size, many units are constructed similar to a wristwatch or with a carabiner. Value-added features include a clock, an alarm, a calendar and a thermometer. Models reaching $20 are larger, typically about 5x9 to 7.5x13cm. Apart from the functions incorporated in basic variants, these combine a heart rate counter, chronograph, hygrometer, altimeter, barometer and weather forecast for professionals. More expensive designs have a built-in GPS, which enables the device to work even in remote areas. Some have a water-resistant enclosure and are equipped with an MP3 player and flash memory.
|