Professional Map Mini-Compass DC45-5D for Serveying

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Product details of DC45-5D

Model: DC45-5D

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: 140*61*17 (mm)

Color: OEM

Features of DC45-5D

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
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: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:What is the difference between professional navigation and professional GPS navigator
You can understand the principle of the radio transmitter receiver radio information, is not charged. GPS only in the need to track and special needs, and through the GSM network data is to receive GPRS traffic charges. Upgrade the main map of the general manufacturers do not charge. Now there are many kinds of vehicle navigation systems, different brands and various functions....Now we have to find a good brand navigation.....I hear people say it's a good way...A Thunis brand navigator is a hot productNow to the car navigator has a lot of MP3, MP4 and other entertainment features,,,,Fixed speed, movement speed and other functions....It is best to have a rear view, and, more secure.... GPS Car Navigator, simply said, is the navigator can help users to accurately locate the current position, and according to the established objective calculation of stroke by map display driving auxiliary equipment and voice prompt two ways to guide the user to the destination. It includes two important components: one is the global positioning system (Global Positioning System) referred to as GPSSuggest that you buy a professional GPS, after all, the phone's function is to call.
Q:Handheld GPS locator measuring accuracy is about how many meters?
The handheld machine precision is generally divided into: centimeter decimeter level, 1 meters, 2 meters, 3 meters, 5 meters; the precision is higher, the higher the price. You can consult the Haida official website "mobile MGIS mall".
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:Hand held GPS coordinate conversion method
By the 84 coordinates to Beijing 54 Coordinate. A collection of 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" dot, point the best is around without interference of electromagnetic wave, vision, satellite signal. 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:GPS method for highway survey?
For long tunnels, the conventional measurement of large bridges has the following limitations:1, long tunnels, bridges and other structures generally require the measurement level of four or more. With conventional measurement methods, often adopt the measure to increase the number of methods to extend the observation time, time consumption and labor consumption to try to improve the accuracy of.2, the long tunnel and bridge for the complex terrain region difficult, conventional control measure for visibility and network shape, often cut down the workload is quite large, so the measurement of the cost of a large, hard work.Link control network of high precision 3, long tunnel and bridge and low precision and route network, although with adjustment methods can be overcome, but because of the terrain conditions are difficult, the measurement workload to its connection, and is not too easy. In practical work, the control of the structure and the measurement of the route are often out of touch.
Q:Magellan GPS handheld why so many people choose not to say that the map is not good
Outdoor use three times a year also on the trip, but also want to use both sides can be used to the best, so these are the best of the two Ming and Magellan did not know that the election of the good, but I am willing to build businesses with the best Ming of the 450.Chasing the answerIf only in the city with less than 610510 can be upgraded Magellan navigation, 610 more than and 510 three axis electronic compass if you don't like the original forest does not receive any signal where there is no whatTake a look at yourself
Q:Handheld GPS each brand is what the difference between different prices in the
I was engaged in car GPS positioning, the first difference between different prices is the biggest cost of different module determines the price, this is the precise positioning of the key, but also the guarantee of product quality, rather than low-cost copycat version, as a kind of different price mobile phone, why Apple four generation sell so expensive but, only a few hundred to copycat.
Q:Handheld GPS market which there are several models can be used to measure the land area
Professional handheld GPS only Magellan and set SIBAO
Q:What factors affect the handheld GPS receive signal?
Active ionosphere, large canopy, high voltage wire, high building.... Have influence.

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