Map Direction Compass DC35-1A

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Model: DC35-1A

Name: Professional map compass, ruler compass

Product Origin: China

Supply Ability: 10,000 pcs/month

Minimum Order: 30 pcs

MOQ for OEM package: 500pcs

Material: Plastic


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.

6, Magnifier function

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Q:What do you need to test for GPS?
6 antenna type to give you a good positioning, GPS receiver requires at least 3 ~ 5 satellites are visible. If you are in a canyon or on both sides of the street, or in the dense jungle, you may not be able to contact with enough satellites, so that you can not locate or only two-dimensional coordinates. Also, if you're in a building inside, you may not be able to update your location, some GPS receivers have a separate antenna can be attached to the windshield, or built-in active antenna, or an external active antenna can be placed on the roof, the receiver which helps you get more satellite signals the. 7 other indicators to buy GPS equipment, according to the needs and use of the environment, size, weight, waterproof, shockproof, dustproof performance, high temperature resistance, power consumption and other indicators should be taken into account.
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:How the German born handheld GPS Mu meter, I want to buy?
The data acquisition function of scientific, simple and accurate measurement of area, display area and the "Mu", "price" area can be set automatically calculate the area of "price", fit the actual demand Chinese industry users on the data collection and usage, highlighting the professional quality.Is the highest cost-effective mid-range machine
Q:Hand held GPS coordinate conversion method
Three parameter test DX, DY, DZ, DA, DF after the conversion parameters of the five, must be prompted to enter the handheld GPS, while the input area of the central meridian longitude. E on behalf of the east longitude, projection ratio of 1, the deviation of things to the north and south of the deviation of 0, and set the unit for M. Enter these parameters, should be taken to the field test, check whether these five parameters are correct. The method is selected, vision, GPS receiving signal strength of the feature points in the field (such as linear object intersections, independent features, etc.) is the best stone control points were measured and compared with theory and find out the coordinates of these points. If the results of the comparison exceed the nominal accuracy of the instrument, the conversion parameters or the problems that should be found should be recalculated.
Q:Seeking the similarities and differences between RTK and GPS
RTK full name is GPS-RTK real-time dynamic distribution, which you know.
Q:Magellan GPS handheld why so many people choose not to say that the map is not good
Magellan GPS handheld maps are not even, it is said that the map even money! No need ah.
Q:Handheld GPS can be used for mountain terrain 1:2000 topographic mapping
It is really unexpected, basically not, the accuracy is not enough!
Q:Ask how to select a google satellite map into a handheld Area GPS
If an ordinary mobile phone GPS, can install Orville interactive map support pre download any regional satellite map, support for offline use.
Q:Professional GPS handheld and mobile navigation difference
Design ideas and the use of different objectsThe handheld is designed for military, mapping, mining, agriculture, outdoor sports (hiking, hiking, orienteering, cycling, water sports, paragliding, etc.).Cell phone navigation is designed to drive a car in the city, built-in interest points are mostly concentrated in the city.
Q:What is the difference between GPS and GPS?
In fact, the main function is to use navigation as long as the navigation function can be used

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