• Good Mapor Ruler Mini-Compass DC45-5W for Surveying System 1
  • Good Mapor Ruler Mini-Compass DC45-5W for Surveying System 2
  • Good Mapor Ruler Mini-Compass DC45-5W for Surveying System 3
Good Mapor Ruler Mini-Compass DC45-5W for Surveying

Good Mapor Ruler Mini-Compass DC45-5W for Surveying

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
20 pc
Supply Capability:
10000 pc/month

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Product details of DC45-5W

Model: DC45-5W

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: 114*60.5*167(mm)

Color: OEM

Features of DC45-5W

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.

 

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. .
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:GPS handheld function to measure it?
If the construction survey is certainly not the case, the control measurement is possible
Q:What is the difference between a hand-held GPS and a car's onboard navigator
Effect of GPS navigation handheld as vehicle, as the vehicle with what map, the hand-held GPS is mainly used for point positioning, measuring area, high precision, good anti 3, my understanding is that
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:I am a handheld GPS precision is low, how to use to be able to improve certain accuracy
If the carrier phase measurement function is not available, you have the maximum accuracy of GPS accuracy of 1-10This can only improve the observation environment using SBAS and other ways to improve the accuracy
Q:Magellan GPS handheld why so many people choose not to say that the map is not good
Magellan navigation and positioning company with Taiwan Jia Ming Company as the world's leading outdoor handheld GPS, its product features have their own advantages. General Magellan price will be slightly higher, Derek source may be more, but in recent years, the 2 brands will be on a par with slowly, Magellan with the national topographic map, a detailed map of the vehicle with the navigation package, Derek product price has been lowered. If the old section of the handheld GPS feel Magellan's design is more fashionable, the new Magellan with better Ming products have their own characteristics, mainly to see their own habits and tastes.
Q:Handheld GPS and mobile phone GPS what is the difference?
The same: GPS main chip may be the same; can complete the GPS positioning;
Q:Jia Ming etre20 handheld GPS good
The new generation of the eTrex series is the first generation of user level receivers that can track both GPS and GLONASS satellites. GLONASS global navigation satellite system developed by Russian Federation, fully put into use. When using the GLONASS satellite, the average time for the receiver to lock the target is about 20% faster than GPS. And, when using both GPS and GLONASS, the receiver has the ability to lock more than 24 satellites as compared to GPS alone.
Q:Fuxin coordinates with the mapping of the seven parameters are what ah there is no professional knowledge to tell my brother I need to fill the gps... Thanks.
Three translation parameters Delta X, Delta Y, Delta Z, three rotation parameter w X, Omega Y, Omega Z and a zoom M, these parameters need to be calculated in a fixed point under different ellipsoid!

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