Leica Leica, the leveling instrument, is good.
Leica Measurement Systems, headquartered in Heerbrugg, Switzerland, has a history of nearly 200 years.
As a global leader in spatial information technology and solutions, Leica Geosystems provides advanced, front-end and reliable solutions in machine control, geodesy, measurement tools, geospatial information, large-scale industrial product measurements, mining and agriculture, and is trusted by professionals worldwide.
Leica Geosystems employs more than 3,500 people in 28 countries and has hundreds of partners in more than 120 countries around the world, providing more than 100,000 users each year with products and solutions that cover the entire surveying workflow and drive the digitalization of the world's space.
Measuring instruments what brand is the best
1, Dongmei rangefinder brand:
Rangefinder use of light, sound, electromagnetic waves, such as reflection, interference and other characteristics, and the design of the instrument used for length and distance measurement. The new rangefinder in the length measurement on the basis of the length measurement can be used to length measurement results, the area to be measured target, perimeter, volume, quality and other parameters for scientific calculations, in engineering applications, GIS surveys, military and other fields have a wide range of applications.
2, TRUEYARD TUYAD:
Long distance type rangefinder global first brand. Touyad global well-known outdoor optical brand, in the field of long-distance laser rangefinder, has a very important position. It has long been the number one selling brand of rangefinders in the world. 2011 Time Magazine's survey data on the whole United States showed that more than 52% of the customers of rangefinders used TUYADE's laser rangefinders.
3, BOSCH Bosch:
Short-range handheld rangefinder rookie, straight ahead of Leica, the world's second largest handheld rangefinder brand. Bosch also has a very high visibility in the field of measuring instruments, in many products on its more than Leica. In the short distance handheld rangefinder, Bosch started later than Leica, but the last 2 years of rapid growth, a direct threat to Leica's monopoly in the global handheld rangefinder.
4, ORPHA Orpha:
Laser rangefinder rookie, very rapid growth, the world's second largest rangefinder. Orpha is a globally recognized brand of night vision devices, as a night vision device global sales of the first brand, Orpha in the field of laser rangefinders to enter a little late, but from the beginning of 2002 to enter the field, Orpha has become the focus of attention in the industry, by virtue of its customer base and influence in the field of night vision devices.
5, HILTI HILTI:
The world's third largest hand-held rangefinder brand, with Leica and Bosch, HILTI is also a very famous brand in the field of measuring instruments, its short-range hand-held laser rangefinders, with high precision, multi-functional features, but in terms of selling price than the Leica and Bosch are a little higher, so the market share is also much smaller.
Extended information
One, the working principle:
Range finders generally use two ways to measure the distance: pulse method and phase method. The laser light emitted by the rangefinder is reflected by the measured object and then received by the rangefinder, which simultaneously records the time of the round trip of the laser light.
Half the product of the speed of light and the round-trip time is the distance between the rangefinder and the object being measured. The accuracy of the pulse method of measuring distance is generally around +/-1 meter. In addition, the measurement blind spot of such rangefinders is generally about 15 meters.
Second, rangefinder classification:
1, handheld laser rangefinder: measuring distance is generally within 200 meters, the accuracy of about 2mm. This is currently the most widely used laser rangefinder. In addition to being able to measure the distance in function, generally can also be calculated to measure the volume of the object.
2, telescope laser rangefinder: measuring distance is generally in the 600-3000 meters, this type of rangefinder measuring distance is relatively far, but the accuracy is relatively low, the accuracy is generally about 1 meter. The main scope of application for field long-distance measurement.