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How many types of EDM instruments are there based on wavelength?(a) 2(b) 4(c) 5(d) 3I got this question in homework.The question is from EDM topic in portion Basic Surveying of Basic Civil Engineering

Answer»

The CORRECT choice is (d) 3

The BEST I can explain: The 3 types are MICROWAVE (TELLUROMETER), infrared (Distomat) and visible range (GEODIMETER).



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