Electronic Distance Measurement

Edm instruments are highly reliable and convenient pieces of surveying equipment and can be used to measure distances of up to 100 kilometers.

Electronic distance measurement.

This text gives an up to date introduction into electronic distance measurement edm with a comprehensive review of modern equipment and procedures. The surveying equipment functions with the help of micro waves come under this category. Edm is commonly carried out with digital instruments called theodolites. Does everything a theodolite does but measures distance accurately using a laser beam reflected from a mirror.

Laser measure makingtec 131ft m in ft mini laser distance measure pythagorean mode lcd backlight display laser measuring tape volume area measurement digital laser tape measure x40 by makingtec 19 99 19. This gives great precision when surveying. Thanks to its laser precision technology and real time measurement mode it takes instant and reliable measurements up to 135 ft to size up the job in seconds. Electronic distance measuring instrument is a surveying instrument for measuring distance electronically between two points through electromagnetic waves.

8 9 field procedure of electronic distance measurement 8 10 geometry of electronic distance measurements 8 11 edm without reflecting prisms reflector less measurements. More product details close. The electronic distance measuring equipment is differentiated into three types as microwave instrument infra red equipment and light wave equipment. Electronic distance measurement edm is a method of determining the length between two points using phase changes that occur as electromagnetic energy waves travels from one end of the line to the other end.

It is useful for surveying but distance measurements by tachometry are not too accurate. The digital bubble vial provides a visual reference when measuring horizontal distances. And it fits in any pocket for easy access. Electronic distance measurement edm is a method of determining the length between two points using electromagnetic waves.

It is accurate up to 1 16 in. Normally these used to measure long distances within 100km with their frequency range. What is electronic distance measurement edm.