Map Scale Compass or Ruler Compass DC40-3A

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Product details

Model: DC40-3A

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: 126*60*10 (mm)

Features

1, professional usage: orientation, distance measuring, measuring slope,

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.

Payment term: TT/ LC

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Q:How to upgrade handheld navigator
Recommend the use of mobile map navigation.Chasing the answerEasy upgrade.
Q:Handheld GPS, the measurement of arable land, fixed point and circle test, which is more accurate,
If the measurement point is only the case, the dynamic GPS is now the general error can be guaranteed within 3cm, the total station can be guaranteed to the millimeter.
Q:What do you need to test for GPS?
5.DGPS you know, differential GPS (DGPS) positioning accuracy is very high, some GPS equipment providers set up a DGPS transmitter in some areas, free of charge to its customers, if customers are buying GPS receivers with DGPS function. The DGPS transmitter is a fixed GPS receiver (in a 100km ~ 200km exploration scene in the radius setting) receive satellite signals, it knows exactly what is the exact time of transmitting satellite signal to the theory, and then compare it with the actual delivery time, then calculate the "difference", influence this is very close to the atmospheric refraction, it will send out the difference, usually with FM (FM) radio data transmission using subcarrier modulation signal in the baseband receiver, GPS and DGPS function can receive and use it more accurate positioning.
Q:Mountaineering to buy a professional GPS or Mountaineering Watch
Can be downloaded in general maps, satellite maps, and even contour maps, which features far more than handheld GPS or mountain climbing watches, you can better meet the needs of mountaineering.
Q:What is the difference between industrial GPS handset and mobile navigation
3, professional handheld machine with industrial design. First of all, if used outdoors, then fell, and so on are likely to water, and this thing is also very expensive, so the opportunity to have a high professional anti shock waterproof performance.4, different screen design. If you look carefully, you can see in the outdoor light, mobile phone can not see the contents of the screen, while the professional handset is not the same, can see clearly in bright light, does not affect the work of foreign trade operations.
Q:What qualifications should a normal GPS locator have?
Patent, business licenseLook what kind of
Q:Professional GPS handheld and mobile navigation difference
Two, different hardware configurationAs the field work environment is relatively poor, so waterproof, dustproof, shockproof for handheld GPS is very necessary. Handheld GPS on the market level of water is generally IPX7, and the continuous use of time is often more than 10 hours. Mobile phones are not so much demand. Handheld GPS function is relatively simple, and even most of the products are still grayscale display screen, multimedia features almost No.In the chip, there is not much difference between the GPS and GPS handheld mobile phone, mobile phone is commonly used in the Samsung 2440 chip and SIRF III receiving module on the handset is also very common, but in recent years MSTAR from Taiwan due to its advantages of cheap, very popular in the low-end handset.
Q:Handheld GPS market which there are several models can be used to measure the land area
Can only use professional GPS measuring instrument! Magellan and SIBAO!
Q:Recommend a handheld GPS
Is not a professional geography or geological personnel, there is no need to use Garmin ah Magellan what ah, you do not need. Using a mobile phone that can accept GPS signals is enough, free software and maps can be found on the internet. On the market a lot of 2000 yuan or so of the phone has this feature, remember that the phone has GPS signal acceptance, not GPRS oh!
Q:Mobile GPS can replace professional handheld GPS
No, professional signal and positioning more accurate,Walk along the plots in a circle can measure the size and graphics trajectory, 550 yuan, USB charging, large capacity lithium battery, black and white screen to see the clear day for outdoor use.

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