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.

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Q:Mountaineering to buy a professional GPS or Mountaineering Watch
There is no need to buy too many devices. Now the phone is an essential tool, the phone has GPS,
Q:Can a handheld navigator connect a cell phone? Thank you
Now basically use the phoneEasy update and operation
Q:I am a handheld GPS precision is low, how to use to be able to improve certain accuracy
If you can join the CORS network, the accuracy of decimeter to centimeter level.
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
Q:Handheld GPS settings.
2 map reference setting: [[map] - unit "benchmark is set to User, and input the DX, DY, DZ, DA, DF parameters, usually DX, DY, DZ vary from region to region, so need to know the high level control points to solve, solving methods are as follows:The handheld GPS is placed in the control point field buried pile, were measured, and then hand coordinate coordinates and the known control points of the GPS measurements obtained for the poor, can be obtained by local coordinates and elevation deviation value: DX, DY, DZ.
Q:GPS method for highway survey?
Defects of conventional measurement methods:1, the specification of the length of the attached wire, the length of the wire and the length of the wire between the nodes have strict requirements, generally for high grade roads are required to meet the requirements of the first line. In this way, the length of the wire shall not be more than 10 km, or the length of the wire shall not exceed the length of the wire attached to the attachment of the wire length of 0.7 times. This requirement is generally difficult to achieve in the actual work, often appear super standardized operations.2, to collect the starting point for the general route of measurement and control is difficult to ensure the same measurement system, the measurement and measurement, often in the city of control points mixed together, the compatibility between systems, if the starting point is not compatible, is bound to affect the quality of measurement.3, serious damage to the national site, the impact of measurement operations. Due to the country's basic control points, mostly completed in 50s and 60s, after more than 30 years, some point due to the needs of economic construction is destroyed, and some people because of the lack of knowledge of human destruction. Route survey work in these areas, often in the 50 km above all can not find the wire control points. The quality of the route control survey is not guaranteed.4, ground visibility difficulties often affect the implementation of conventional measurement. The control points of the general route shall be located within 300 meters from the course. Due to visibility reasons, it is difficult to meet the conditions, even in a large range, and the dense shrub forest area, simply can not implement conventional control measure.
Q:Who can recommend me a table under the professional GPS software
SOSO map is good, I use this.Kelid navigation is also good.
Q:GPS handheld function to measure it?
It depends on what kind of GPS handset. Some machines have this feature.
Q:How about the accuracy of the GPS handset?
Zhonghaida Q1:2 zhonghaida Q5:1 meters; meters; zhonghaida Q6: decimeter; zhonghaida Q8 cm;
Q:Trouble Hongkong friends come in! About Hongkong buy handheld GPS!
I doubt this question will be answered by the people of Hongkong?Handheld GPS do best is GARMIN, Taiwan and the mainland are agents. It's all the same.

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