Map compass DC45-5C

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: -

Supply Capability:: 5000 pc/month

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Product details

Model: DC45-5C

Name: Professional map compass, ruler compass

Product Origin: China

Supply Ability: 10,000 pcs/month

Minimum Order: 50 pcs

MOQ for OEM package: 500pcs

Product Size: 128*60*16 (mm)

Color: OEM

Features

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

Q:Professional handheld GPS GARMIN (DR) how to use: Would like to use the function of handheld GPS purposes, the measurement of soil area, linear navigation, auxiliary fishing waypoint navigation point information, traffic data display, etc.

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 brand rankings: SIBAOIn the GNSS coordinate precision and attributes, "SIBAO" has a professional GPS handset, GIS i-PPP GIS, a mobile data collector, GIS, high precision GIS, high precision measurement of RTK complete product structure, to form a comprehensive solution to the spatial information industry scheme.

Q:Mobile GPS can replace professional handheld GPS: No, the phone's GPS is used for navigation, professional handheld GPS is used for measurement. Navigation GPS cannot be used for measurement because of insufficient accuracy.

Q:How do I still stay in the GPS navigation, GPS monitoring of the primary idea? FiveBusiness services, thank you!Future business services: 1 power, telecommunications, telecommunications and other network time synchronization2 accurate timing of admission3 accurate frequency of admission1 geodetic measurements of various levels2 Road and various line lofting3 underwater topographic survey4 crustal deformation measurement, dam and large building deformation monitoring5.GIS application6 construction machinery (tyre crane, bulldozer, etc.) control7 precision agricultureAt the present stage, it is mainly used for the security of vehicles and the management of personnel vehicles. With the continuous development of social economy, more and more vehicle users, GPS will gradually get wide application, on the stage of the car is enough for your service. Prospects can still be Lin Shijie GPS

Q:Handheld GPS charge is not into electricity what is the reason: 3, restore the factory settings to see whether the system is.4, the battery damage, can replace the battery repair.

Q:Verify the accuracy of the GPS device to buy back, the way is to use Android under the'gps state 'software, to test the accuracy of real-time single point positioning.1 with two sets of the same Android Tablet Computer (custom machine, type of bad) in the same position for receiving, find that the accuracy is the same (software, are 1-2 meters), but the position would be poor 10 meters or more. It's in the same place.The 2 one is the Android tablet computer, a mobile phone is HTC G10, also received together in the same position, find that the accuracy is not the same as (the latter 20 meters or so), but also may be about 10 meters position difference.The accuracy of this GPS device can reach 1-2 meters, while the same location in real-time single point positioning error of 10 meters, a reasonable explanation.: You are very normal, the tablet computer and mobile phone antenna, not inside, the highest accuracy is about 10 meters, as ordinary navigation is good enough, to achieve centimeter level accuracy by GPS single is, that is to achieve the RTK measurement, is the application of professional measurement, now RTK or by the United States GPS satellite, not the United States GPS satellite as China Beidou mobile station and the base station is in need of mutual difference calculation to achieve accurate measurement. Now the single can receive SBAS signal, single precision up to 1-2 meters, the Northeast in some places to achieve sub meter level, which is the highest single precision can reach, is also used in field investigation using professional machine.

Q:Highway measurement with GPS I do not know which of the base station settings and mobile station settings I are very vague, to the instrument to build a coordinate system how to build the relevant issues to me: 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: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: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. .

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