Email: janet@leosurvey.com WhatsApp:: +86 18603833033
News
Electronic Distance Measurement (EDM) Instruments--1
Home > News > Survey Industry News
Direct measurement of distances and their directions can be obtained by using electronic instruments that rely on propagation, reflection and reception of either light waves or radio waves. They may be broadly classified into three types:
1. Infrared wave instruments
2. Light wave instruments
3. Microwave instruments