Good Mapor Ruler Mini-Compass DC45 for Surveying

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Tianjin
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20 pc
Supply Capability:
10000 pc/month

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Product details of DC45-5A

Model: DC45-5A

Name: Professional map compass, ruler compass

Product Origin: China

Supply Ability: 10,000 pcs/month

Minimum Order: 20 pcs

MOQ for OEM package: 500pcs

Product Size: 108*61*16 (mm)

Color: OEM

Features of DC45-5A

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
environment.
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.

6, Magnifier function
5,ruler compass,
6,for map measure and drawing

7,one meter neck rope,

8,Liquid filled in the compass  for reliable readings,

9, magnifier function.

 

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Q:I would like to ask the outdoor adventure GPS are required to have what functions, a good GPS all aspects of the parameters are?
The first three factors: ability as a good tour pal, sun and rain fearless tramp over mountains and through ravines Rulvpingdi, GPS, his nature can not be weak, small knock a small touch can not have temper, off or out in the water dirty, also to be able to continue the work. So the waterproof / earthquake / dust and other indicators become the primary consideration factors GPS these are the protective ability of vehicle GPS, most of them do not have, and some professional GPS design, there will be more conducive to the harsh environment, such as some of the products designed to be capable of floating after falling into the water. The outdoor need to step back. What is it, if you can not do to prevent flooding, then rain proof ability is the minimum requirement.
Q:What is the difference between professional GPS handsets and mobile navigation?
First of all, if used outdoors, then fell, and so on are likely to water, and this thing is also very expensive, so the opportunity to have a high professional anti shock waterproof performance. You can see the Challenger I tour the next 600, three well plates.
Q:I would like to ask, handheld GPS (set SIBAO) and land use of the RTK, this error is 20 meters?
GPS was in error with 10 meters, with the star search results, related to the environment, if the precision is high, as long as the use of handheld GPS submeter or handheld RTK
Q:How about the accuracy of the GPS handset?
Zhonghaida Q1:2 zhonghaida Q5:1 meters; meters; zhonghaida Q6: decimeter; zhonghaida Q8 cm;
Q:Handheld GPS navigation is what? Where to buy handheld GPS navigation, how to select GPS navigation?
Handheld GPS navigator, also known as portable navigator, but also divided into 2 kinds, one is the ordinary PND navigator, you can go to Zhongguancun, the major appliance stores to buy, and the other is the mobile navigation, GPS smart phone is installed in the GPS navigation software can be,The navigator is composed of 2 parts: hardware and navigation software. The navigator on the market is about RMB 600. The brand of Kelid navigation software is usedGPS is a portable handheld navigation navigation products, the market is now very much, most car navigation can be used, the Gps signal is still free to receive satellite signals in the United States, you only need to charge it, map to the sellers in general can be upgraded.
Q:How to upgrade handheld navigator
Recommend the use of mobile map navigation.Chasing the answerEasy upgrade.
Q:What do you need to test for GPS?
As a high-tech product, GPS has a very complex technical parameters. However, as people's living standards improved rapidly, more and more ordinary people began to pay attention to the positioning and navigation tools originated from the military. Because the convenience it brings is unprecedented. In order to let everyone out of all the technical parameters of GPS receiver, no longer confused at the time of purchase, the author selected six of the most important technical indicators, one by one to explain to you. 1 parallel channels on the market most of the GPS receiver is a 8 channel, 12 channel, the 16 channel, which allows them to continuously track the information of each satellite. Some GPS devices only have 2 to 5 parallel channel receiving satellite signals, because the average of 8 satellites are visible, which means that the GPS receiver must visit each of the satellites in order to obtain information about each satellite. All of our products are in Shenzhen channel 16 channel, multi-channel parallel GPS receiver, including the advantages of rapid cold start and initialization of satellite information, but also in the forest area can have a better reception. General 12 channel receiver does not require an external antenna, unless you are in a bad environment conditions such as closed space, such as the cabin, the car. 2 the sensitivity of the GPS satellite signal to the ground has been very weak, as well as ground wireless communication clutter interference. The lowest traceable signal strength of the GPS receiver determines how much useful signal is received. A GPS receiver with a lower minimum tracking signal strength has a higher sensitivity, and can receive more available satellites under bad conditions
Q:Handheld GPS charge is not into electricity what is the reason
Two, solutions:1, for other chargers, or data lines try, or clean the charging port.2, boot into recover mode advancsd advanced mode, select the wipe Battery, remove battery traces.
Q:Professional GPS handheld and mobile navigation difference
Professional GPS is mainly used for acquisition, is not used for navigation; of course, some professional GPS can install third party software, the accuracy is higher than the phone, this is positive;Mobile navigation is only used for navigation, navigation, path analysis and navigation functions, not the acquisition of maps of the instrument.
Q:What factors affect the handheld GPS receive signal?
The United States Department of defense. A SA satellite signal to interference (the U.S. government for consideration of security of civil code of a called "selective availability (Selective SA Availability)" interference, to ensure the best protection system is effective. Because of the random error information added by SA in the navigation message, the positioning accuracy of the civil signal C/A code is reduced to about 100 meters. However, the use of differential GPS technology, the system error can be reduced to 10 to 15 metersTwo. Weather factors (including sunspots, bad weather, etc.) to reduce the intensity of the received signalThree. In buildings, vehicles, insulation paper, or metal shielding, GPS signal will be reduced or completely lost signal. In open spaces, GPS devices receive the best signal. .

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