• Map Scale Compass DC40-3A System 1
  • Map Scale Compass DC40-3A System 2
  • Map Scale Compass DC40-3A System 3
Map Scale Compass DC40-3A

Map Scale Compass DC40-3A

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Product details

Model: DC40-3A

Name: Professional map compass, ruler compass

Product Origin: China

MOQ for OEM package: 500pcs

Product Size: 126*60*10 (mm)

Features

1, professional usage: orientation, distance measuring, measuring slope, azimuth and pitching Angle measurement,

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.

Q:How to upgrade handheld navigator
Recommend the use of mobile map navigation.Chasing the answerEasy upgrade.
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: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:What qualifications should a normal GPS locator have?
Look at his company's business license is what's on the line, if the manufacturer has the most basic 3C proved, and some such as system certification or proof of what the explosion proof CEPREI
Q:Ask how to select a google satellite map into a handheld Area GPS
If it refers to a professional portable handheld GPS, please ignore this answer.
Q:In addition to the parameters, that is the problem of the machine, what method can reduce the error of these two machines to a minimum. Because, at the same time to find a coordinate. The gap is too big.
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?
So the selection depends on your needs the function and budget. Haida official website mall "mobile MGIS mall".
Q:Handheld GPS how to achieve decimeter
Hello A GPS is not up to the requirements of the class, if no one can buy that expensive submeter GPS, currently on the market with the best precision is GPS, is Derek GARMIN this year a new eTrex 10, 20 and 30, the three can be reached within 3 meters accuracy, you can look at
Q:How to hand GPS eTrex H data to the computer
"Shaanxi skmax navigation information Limited" GARMIN proxy (GARMIN official website can be found), contact (Xiao Hou) the hope can help to you, if you do not understand what we see on the Internet, may at any time, contact us!
Q:GPS Mu meter which brand is good, handheld high-precision land area measuring instrument
A German born mu can also recommend a good precision measuring instrument.Simple operation, the screen is large, a few buttonsBoot, and then look at the star almost, to find a field, start and then click on the end of a circle, out of the number ofElectricity can alsoPrecision mody... With a special RTK or not, but what is sure to measure a circleFlat measurement of quasi accurate, biased on what is almost, it can be accepted

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