Phase Domain Induced Polarization/Resistivity Instruments

L and R Instruments designs and sells portable Resistivity Meters and Induced Polarization Instruments for geophysical applications.  These high quality lightweight instruments are designed and built for rugged environments; they are affordable and easy to use, yet highly sophisticated.

The ULTRA MiniRes

·       Light weight yet durable

·       Low power consumption

·       Lowest cost in the industry

·       Exploration to greater than 1000 feet

·       Choice of 5.0 or 2.5 Hertz



Click Here for more information on MiniRes Products.

 The GPS-Res  (Under Development)


 ·       No cable between transmitter and receiver
 ·       Uses GPS time signals for sync

 ·       Selectable 100 mA or 1 Amp

 ·       Selectable 5.0/2.5/1.25 Hertz

 ·       Dipole-dipole depths to 2000 feet
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Both the MiniRes and the GPS-Res simultaneously measure Resistivity and IP.
Our instruments are built to the highest standards featuring solid-state relays, sealed switches, and anodized laser-etched faceplates.  Typical accuracy of 0.03% and resistance resolution of 0.1 milliOhms.  Input resistance of 200 MegaOhms.
Want to learn more about our history, please click here.
Read what others in the industry are saying about our products, click here



L and R Instruments, Inc.
P O Box 5989, Incline Village, NV 89450, USA

Phone 775-833-1212                                    FAX 775-833-2388