Roulettes and range finders are constantly used in everyday life. But imagine that you need to accurately measure the distance exceeding the length of the standard ten meter roulette. Modern electronics will help to cope with the problem - laser and ultrasound rangefinders.
Electronic rangefinders are much more convenient than metal measuring tapes. It is enough to send the meter to the desired surface point, click on the button - and you will receive a desired value with an accuracy of a millimeter. Seductive light! In addition, electronic devices, as a rule, can measure high lengths up to 40-50 m, and professional models - up to 250 m. At the same time, the cost of such rangers usually does not exceed 4-5 thousand rubles, and inexpensive models can be found in selling for 2-3 thousand rubles.
Release of electronic rangers are engaged in companies producing a building and measuring instrument. Among professional equipment can be noted Bosch (blue line), DeWalt, Hitachi, Leica Geosystems, Makita, Metabo, Ridgid; Among the household - we note Bosch (Green Rule), Elitech, Interskol.
For serious construction work, it is better to choose laser rangefinders, and ultrasonic meters can be used as a universal casual tool in everyday life, at home or in the garden.
Ultrasound or laser?
By design, electronic rangefinders can belong to one of two types: with ultrasonic or laser pulse generator.
Ultrasound without distortion is reflected from transparent and polished surfaces. With this device, you can easily measure the distance to window glass, mirrors or polycarbonate gardening panel. Ultrasonic rangefinders work well with any lighting, and the laser tool range with red laser radiation during bright light is reduced.
Laser rangefinder ridgid. Compact model LM 100 with measurement range up to 50 m.
The advantages of laser rangefinders include their high accuracy. If ultrasound meters can give an error of several millimeters by 10 m lengths, laser error 1-2 mm. In addition, the laser beam is practically not scattered and measures the distance accurately to the selected point. Yes, and the range of measurement in laser range finders is higher.
Bluetooth data transmission.
Electronic rangefinder requirements
Electronic rangefinder is often used in difficult conditions, with high humidity and dustiness of air. Therefore, it must have a durable case, preferably with the dust index and moisture protection not lower than IP 44. Some manufacturers of laser range finders produce separately models for home and for the street, the latter are more protected.
In addition, the tool must be convenient that it can be easily kept in hand in a construction mitten. In professional models, the housing is often equipped with paddles made of soft non-slip plastic. Such linings help hold the tool, and in the event of a fall, the role of the shock absorber will play. An unprotected rigid plastic case in this respect is more fragile and easily breaking.
Useful options rangels
• Built-in level. It will help determine how horizontally the selected surface is located.
• Square measurement, volume. The rangefinder consistently is on top of the corners of the rectangle (there are three points on the plane) or cube (four points defining the lengths of the faces in three planes), then the device independently performs the calculation of the area and volume. In the same way, some models are able to calculate the length of the sides of the rectangular triangle (using this function, for example, calculate the height of the wall).
• Continuous length measurement. The function is used when you need to find a point at a predetermined distance or, let's say, at the maximum remote distance (for example, the angle of the room).
• Rechargeable battery connector. There are models designed to work with finger batteries (or batteries) of the AA type, there are also models with more exotic batteries, for example, calculated on the battery 9 in the "Crown" type.
• tripod. For higher accuracy of measurements, it is recommended to additionally purchase a tripod and set the rangefinder on it. The rangefinder should be equipped with a threaded jack for fastening on a tripod.
Laser rangefinder Bosch. Model GLM 50 C, range 50 m, 1.5 mm error.
Laser rangefinder Bosch. Model GLM 120 C, range 120 m, Bluetooth support.
Compact model LM 100 with measurement range up to 50 m. Model MICRO LM-400, measurement range up to 70 m, built-in slope sensor, continuous measurement functions.
Laser rangefinder: Models Condtrol Smart20, range up to 20 m.
CONDTROL X2 Plus, range up to 60 m.
