In 2006, Ohm-Labs started as a Process Instruments offshoot, focusing exclusively on resistance products. Part of their expertise comes from the famous company Leeds & Northrup. Process Instruments acquired resistance wire, fittings, and related resistance production test equipment in 1994.

Ohm-Labs acquired manufacturing tools and the rights of Electrical Instrument Service / Sensitive Research after the owners retired in 2010.

Through continuous improvement and consultation with top researchers from the world’s national testing institutes, Ohm-Labs builds on the best features of the L&N, JRL, and EIS products by implementing and refining improvements, thus delivering pioneering resistance products.

Ohm-Labs produces:

– Standard resistors
– Precision current shunts
– High voltage dividers

Ohm-Labs’ quality is accredited by the American Association of Laboratory Accreditation (A2LA) to IEC / ISO17025, including ISO9000:2000 and ANSI/NCSLI Z540.1 standards.

All Ohm-Labs products are made in the USA and include accredited calibration.
“Excellence in Resistance” is their goal.

For a complete list of Ohm-Labs products, visit their website



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Victron Energy

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