Lafayette Instrument Sales Rep — Texas, Oklahoma, Kansas

About Lafayette Instrument

The Gold Standard in Polygraph Technology

Lafayette Instrument Company has been the world's leading manufacturer of polygraph instrumentation for decades, supplying law enforcement agencies, government bodies, and private examiners across the globe.

Their instruments are used by federal agencies, as well as thousands of state and local law enforcement agencies worldwide. Lafayette's LX Series computerized polygraph systems represent the highest standard of accuracy and reliability available in the industry.

As an authorized representative, Jerry D. Thomas provides direct access to Lafayette's full product line, backed by deep personal expertise in how each instrument performs in real-world examination settings.

Why Jerry D. Thomas?

Most equipment sales representatives sell tools. Jerry Thomas uses them — regularly. A polygraph examiner since 2007 with thousands of tests completed, his product knowledge goes far beyond a spec sheet — grounded in 39+ years of law enforcement experience.

Began on the Lafayette Instrument LX4000 in 2005–2006 (legacy instrument, now phased out); progressed through the LX series to the current LX7
Authorized representative for Texas, Kansas, and Oklahoma
Advises agencies on the right instrument for their specific use case
Provides post-sale support grounded in real examination experience
Trusted by law enforcement agencies throughout the tri-state territory
Active law enforcement professional with 39+ years of service

Lafayette Instrument Product Line

Professional Polygraph Systems & Accessories

Lafayette Instrument offers the complete range of polygraph equipment — including their own LX Series systems and Limestone polygraph instruments — for every professional examination environment.

LX7 Computerized Polygraph System

Lafayette's newest and most advanced computerized polygraph system. Features 10 data channels, improved PPG sensor for cardiovascular readings, PAT measurement research support, and full compatibility with LXSoftware and LXEdge.

Newest System

LX6 Computerized Polygraph System

Lafayette's current-generation flagship system — widely deployed by agencies and private examiners. 10-channel system with 32-bit A/D conversion, Fischer quick-release connectors, and full compatibility with LXSoftware and LXEdge. Lease financing available.

Current Generation

Limestone ParagonX Polygraph System

A subsidiary of Lafayette Instrument since 2022, Limestone's ParagonX delivers the highest sampling rate in the industry at 625 samples/sec/channel with dual 32-bit ADC. Compatible with LXEdge. Available through Thomas Polygraph Services LLC across Texas, Kansas, and Oklahoma.

Limestone / Lafayette

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LXEdge Software

Lafayette's next-generation polygraph software platform. Compatible with the LX7, LX6, and Limestone Paragon series. Features a modernized interface with improved examination efficiency and full LXSoftware feature continuity.

Next-Gen Software

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OSS-3 — Objective Scoring System v3

OSS-3 is the industry-standard algorithmic scoring system developed by Raymond Nelson, Mark Handler, and Donald Krapohl. Bundled with LXSoftware, it provides examiners with statistically validated, computer-assisted chart analysis with perfect scoring reliability. Accuracy rates of 85–92% in laboratory conditions.

Scoring Algorithm

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Physiological Sensors & Components

Complete range of replacement and upgrade sensors including pneumograph tubes, cardio cuffs, GSR finger electrodes, and plethysmograph sensors — all precision-manufactured by Lafayette and compatible with LX6/LX7 systems.

Components

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Examination Chairs & Accessories

Professional examination furniture including Lafayette's specialized polygraph chairs with integrated sensors, and the full range of examination room accessories and consumables.

Accessories

Sales Territory

Serving Three States

Thomas Polygraph Services LLC is the authorized Lafayette Instrument sales representative across a three-state territory covering some of the most active law enforcement and government polygraph markets in the country.

TX Texas

The largest state territory — serving law enforcement agencies, sheriff's offices, DPS, federal agencies, and private examiners throughout all regions of Texas, with deep roots in the Houston metro area and surrounding counties.

KS Kansas

Serving Kansas law enforcement agencies, correctional facilities, government bodies, and private sector polygraph examiners with Lafayette Instrument equipment, parts, and professional guidance.

OK Oklahoma

Covering Oklahoma's law enforcement and government polygraph needs — from metropolitan agencies in Oklahoma City and Tulsa to county sheriff's offices and private examiners statewide.

Who We Serve

Equipment for Every Professional Setting

Lafayette Instrument equipment through Thomas Polygraph Services LLC is available to a wide range of professional buyers across the three-state territory.

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Law Enforcement Agencies

City police departments, county sheriff's offices, state agencies, and DPS units requiring polygraph equipment for investigations and pre-employment hiring (law enforcement agencies are exempt from EPPA restrictions).

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Government & Federal Bodies

Federal agencies, corrections departments, parole boards, and government entities conducting security screenings and credibility assessments.

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Private Polygraph Examiners

Licensed and certified private examiners seeking professional-grade Lafayette equipment, upgrades, replacement parts, and accessories.

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Training Programs

Polygraph training schools and academic programs requiring reliable instrumentation for student instruction and certification preparation.

Important Legal Notice

Employee Polygraph Protection Act (EPPA)

The Employee Polygraph Protection Act of 1988 (EPPA) prohibits most private sector employers from using polygraph examinations for pre-employment screening or during the course of employment. Lafayette Instrument polygraph equipment sold through Thomas Polygraph Services LLC is intended for lawful use by qualified buyers.

Key exemptions under EPPA — polygraph use for pre-employment screening is permitted for:

✓ Federal, state, and local government agencies and their contractors
✓ Law enforcement agencies (police departments, sheriff's offices, state agencies)
✓ National defense and national security contractors authorized by the Department of Defense
✓ Certain private sector employers in limited circumstances (e.g., pharmaceutical distributors, security firms) under specific EPPA provisions

Buyers of Lafayette Instrument equipment are solely responsible for ensuring their use of polygraph instrumentation complies with all applicable federal, state, and local laws, including EPPA.

🏛️ Read the EPPA on the U.S. Department of Labor Website →

Lafayette Instrument Polygraph Equipment Sales