Best Portable Tesla Meters for Submersible Water Pumps

[jamacare]

Any recommendations on a portable Tesla Meter to measure the strength of a magnetic field emanating from a submersible water pump rotor/magnet?

 

[Simon Bridge]

It usually depends on how big you expect the field to be (how sensitive you need the device) and where you want to operate it (i.e. under water).
You can always build your own.
http://www.coolmagnetman.com/magmeter.htm