Professionl Map Scale Compass DC45-5

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Model: DC45-5A

Name: Professional map compass, ruler compass

Product Origin: China

Supply Ability: 10,000 pcs/month

Minimum Order: 50 pcs

MOQ for OEM package: 500pcs

Product Size: 108*61*16 (mm)

Color: OEM


1, professional usage: orientation, distance measuring, measuring slope, azimuth and pitching Angle measurement, drawing, a magnifying glass

2, high quality compass with neck rope, portable and rugged
3, ACRYLIC material, about 2mm thick
4, Damping Dial: to keep the stability of the pointer, more suitable for outdoor

5, Accuracy: accurate and clear, there were 360 degrees azimuth Angle, outer ring is 64-00 system, Liquid filled in the compass for reliable readings.

Payment term: TT/ LC

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Q:Handheld GPS buried in the soil there is a signal
It depends on how deep you buried the darker the GPS signal, and must ensure that the GPS antenna upward, the above can not be covered with metal objects
Q:Fuxin coordinates with the mapping of the seven parameters are what ah
Handheld GPS has not been used, you can find three known control points, try to solve.
Q:How to set the handheld GPS related parameters and coordinate conversion parameters throughout the country
Collect the application area of high grade control data in GPS receiver applied earth area (such as a county) find three (or more) uniform grade (accuracy better) or GPS "B" network, the best point is around without interference of electromagnetic wave, vision, the satellite signal is strong. To the local surveying and mapping management department (such as: the local bureau of Surveying and mapping, surveying and Mapping Institute) Gauss plane coordinate copy these points of the Beijing 54 Coordinate System (x, y), the elevation of H and WGS-84 coordinates of the geodetic coordinates (B, L), the high H.
Q:Handheld GPS and mobile phone GPS what is the difference?
Different: antenna size, function, accuracy, protection level, and has been different in the application layer (handheld GPS support GPS compass navigation and map navigation and other more professional GPS applications);
Q:What is the difference between professional GPS handsets and mobile navigation?
Mobile phones are used for network navigation, no network will not work, professional GPS navigation satellite navigation,
Q:I am a handheld GPS precision is low, how to use to be able to improve certain accuracy.
Look at the maximum accuracy of GPSIf the difference accuracy can reach 1cm you can connect CORS single base station and other network RTK way to achieve the corresponding accuracy
Q:What qualifications should a normal GPS locator have?
You ask is handheld GPS, it is the manufacturer's qualification requirements or what. For example, business license, tax registration certificate, organization code certificate, vendor authorization, software copyright, precision test report, 3C certificate, ISO9001, industrial grade IP certificate and other relevant qualification certificates and documents
Q:Handheld GPS brand rankings
SIBAOIn the GNSS coordinate precision and attributes, "SIBAO" has a professional GPS handset, GIS i-PPP GIS, a mobile data collector, GIS, high precision GIS, high precision measurement of RTK complete product structure, to form a comprehensive solution to the spatial information industry scheme. Set of SIBAO products awarded the Beijing independent innovation product identification certificate, satellite navigation and Engineering Excellence Award and other professional awards. At the time, location, navigation and other comprehensive applications, Unistrong successful implementation of hundreds of large projects, services in many national key projects, won the national honor.MagellanGarmin
Q:What factors affect the handheld GPS receive signal?
In addition to not see the sky (such as indoor, underground, dense forest) and narrow alleys and tall buildings on both sides of the environment, there will be no impact. Many GPS has 12 receivers (antenna unit), as long as it can capture 3 satellites can be three-dimensional positioning (including height), the 2 satellites can be flat positioning.
Q:Mobile GPS can replace professional handheld GPS
Ziphah measured Mu instrument, a key measurement area, the use of simple, SV-118, with high precision imported GPS module and antenna, accurate measurement, the block walk in a circle to measure the size and graphics trajectory, 550 yuan, USB charging, large capacity lithium battery, black and white screen to see the clear day for outdoor use.

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