This project is easy to use. place the card on the of a magnetic material and it will display a patterned magnetic field. Great for personal or scientific research. It can help us study magnetic fields that we cannot see.
eBay
ERD-10 4-in-1 electromagnetic radiation detector, electric and magnetic field strength, RF power, temperature monitor. RF radiation power range: 0.2-1000mW/cm². Magnetic field. Electric field. • Accuracy: 0.01μT.
eBay
Equipped with a copper probe rod, 55cm in length, compact, easy to carry and stretch, used to find water/water, gold, minerals, lost objects or other things tool for paranormal investigations. 2 copper probe rod.
eBay
This project is easy to use. place the card on the of a magnetic material and it will display a patterned magnetic field. Great for personal or scientific research. It can help us study magnetic fields that we cannot see.
eBay
Humanized design: It has practical functions such as maximum value lock, unit switching, and automatic shutdown. The ergonomic appearance is matched with soft glue on the side, which is comfortable and portable for one-handed operation.
eBay
1 X Electromagnetic Radiation Detector. Special function 5-LED indicator light represents different radiation values. Application of 50/60Hz frequency monitoring, dark green 0 to 1.5 mgauss; green light 1.5 to 2.5 mgauss; yellow 2.5 to 10 mgauss; orange 10 to 20 mgauss; red 20 + mgauss.
eBay
This project is easy to use. place the card on the of a magnetic material and it will display a patterned magnetic field. Great for personal or scientific research. It can help us study magnetic fields that we cannot see.
eBay
Humanized design: It has practical functions such as maximum value lock, unit switching, and automatic shutdown. The ergonomic appearance is matched with soft glue on the side, which is comfortable and portable for one-handed operation.
eBay