M.C. Miller Co

What M.C. Miller Co does

M.C. Miller Co., Inc. is a US-based specialty manufacturer of precision corrosion testing and monitoring instruments for the cathodic protection and corrosion control industry, founded in 1945 and headquartered at 11640 U.S. Highway 1, Sebastian, Florida. The company produces a vertically integrated product portfolio including handheld voltmeters (LC-4.5, Analog and Digital Potential Meter Kits priced at $446.50-$765), wireless and ruggedized dataloggers (VADER, VoltTab, Gx series, ranging $645-$4,850), copper/copper sulfate reference electrodes (RE-5 at $63.50, RE-2.5U, IonX series), GPS-synchronized current interrupters (JPL100), insulation checkers, and complementary Android-based survey applications (Pipeline Survey at $420, Test Site Survey). Underlying technology emphasizes field-grade durability (IP65/IP67 ratings, MIL-STD-810G drop resistance, Mil-Spec switches, sealed gasketed cases), selectable input impedance (20 MΩ-200 MΩ adapters) for high soil resistivity measurements, sub-80ms response times for On/Off pair readings during fast current interruption cycling, and submeter GPS for position-stamped survey data that integrates into ProActive/ProActive Pro CP data management software.

The business model is principally one-time hardware sales complemented by software licenses, replacement parts and consumables (shunts, test leads, copper sulfate crystals), and factory repair services (12-month in-warranty, 90-day out-of-warranty). Distribution is sales-led, executed through a direct e-commerce storefront at mcmiller.com with overnight shipping cutoff of 2pm EST, layered with a global network of authorized distributors that the company explicitly recommends to ensure genuine products. Pricing is published for most SKUs (with some gated by account sign-in). The company targets three primary vertical segments: pipeline operators and corrosion engineers (CIPS, DCVG, CIS, surface potential, and tank-to-soil potential surveys); infrastructure inspection and engineering on reinforced concrete (bridges, parking garages, ASTM C-876 corrosion mapping); and underground storage tank operators. Sales support includes dedicated English and Spanish contacts, a separate technical support queue, and ProActive-specific software support.

The company has operated continuously as a private corporation since founding, with leadership transitioning from founder Melvin C. Miller (pioneering cathodic protection engineer and 1978 NACE Frank Newman Speller Award recipient) to grandson Mark Miller (Melvin C. Miller II, president 1986 until his passing in June 2009), and subsequently continuing under employee leadership at the same single-roof Sebastian facility that houses machine shop, PCB assembly, product assembly, IT, sales, and administration. M.C. Miller reports 11-50 employees, no parent company, no subsidiaries, no external funding, and no M&A activity in the source materials, with products described as "in service all around the world" and a stated operational longevity of 31 consecutive years exhibiting at NACE annual conferences.

Name

M.C. Miller Co

Legal name

M.C. Miller Co., Inc.

Website

https://mcmiller.com

Company type

Private

Founded year

1945

Operating status

Operating

Headcount range

11–50 employees

Short description

M.C. Miller Co., Inc. is a privately held, US-based manufacturer in Sebastian, Florida, producing precision voltmeters, wireless dataloggers, reference electrodes, and current interrupters for cathodic protection and concrete corrosion testing since 1945, serving pipeline operators, infrastructure inspectors, and storage tank operators worldwide.

Ownership category

akta.pro rank

Product category

Corrosion Testing Equipment

NAICS

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (3345)

SIC

Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Corrosion Inspection & Coating/CP Surveys (CUI, CP, DCVG/ACVG) (EUAEAHAF)

akta.pro secondary industries

Corrosion Monitoring & Integrity Management (Pipelines, Tanks, CUI) (EUAEAKAD), Corrosion Control & Cathodic Protection Maintenance (CP Systems, Coatings) (EUAJAMAF)

Keywords

• Corrosion testing instruments
• Cathodic protection equipment
• Voltmeters and data loggers
• Pipeline corrosion monitoring
• Reference electrodes

Headquarters

HQ city

Sebastian

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales

Revenue model

1. Hardware Products - Meters and Instruments: Sale of precision voltmeters, data loggers, reference electrodes, current interrupters, insulation checkers, and accessories. Products range from portable field meters to integrated datalogger platforms. Includes items like LC-4.5 voltmeters ($765), VADER dataloggers ($2,105), and complete survey systems.
2. Software Licenses: Sale of Android application licenses including Pipeline Survey ($420) and Test Site Survey applications. Software integrates with hardware dataloggers and ProActive corrosion control management software.
3. Replacement Parts and Accessories: Sale of replacement parts, accessories, carrying cases, electrode extensions, test leads, shunts, and consumables like copper sulfate crystals and antifreeze solutions for electrode maintenance.
4. Repair and Warranty Services: Factory repair services for products under warranty and out-of-warranty repairs. Warranty covers 12 months parts and labor; out-of-warranty repairs come with 90-day warranty on parts and labor.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

M.C. Miller Co manufactures and sells precision corrosion testing instruments, including voltmeters, data loggers, and reference electrodes, used for cathodic protection and corrosion control of underground pipelines, storage tanks, and other metallic infrastructure. The company also develops companion Android applications and software tools for pipeline survey, test site survey, and proactive corrosion data analysis.

Product overview

M.C. Miller Co. manufactures a comprehensive portfolio of corrosion testing and monitoring instruments for cathodic protection applications. The product line centers on precision voltmeters and dataloggers (including VADER, VoltTab, and Gx series) that integrate with Android applications for field data collection. Supporting products include reference electrodes, test leads, current interrupters, insulation checkers, and pipeline survey equipment. The company also offers software applications (Pipeline Survey and Test Site Survey) and data management solutions (ProActive) for corrosion control management. All products are manufactured in the USA at the company's Sebastian, Florida facility.

Differentiator

Problem solved

Functional benefit

Products and services

• Voltmeters

Quantifiable outcome

• Submeter GPS position resolution on Gx dataloggers
• +3 more outcomes

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Borin Manufacturing: Borin Manufacturing designs and produces cathodic protection test stations, reference electrodes, surge protection devices, and related field instruments. Their product portfolio and customer base closely overlap with M.C. Miller's reference electrodes and test station shunts lines.
• Cathodic Protection Services Ltd: Cathodic Protection Services Ltd designs and supplies CP test equipment, monitoring systems, and consultancy to pipeline operators. They are a focused competitor in the same CP testing and integrity management category as M.C. Miller.
• Tinker & Rasor: Tinker & Rasor manufactures cathodic protection test instruments, holiday detectors, and isolation/locating equipment used by pipeline corrosion engineers. They are the most direct US competitor to M.C. Miller in CP field instrumentation, addressing overlapping customers with similar voltmeter and interrupter offerings.
• Rohrback Cosasco Systems: Rohrback Cosasco supplies corrosion monitoring systems, coupons, probes, and cathodic protection instrumentation to oil & gas and infrastructure operators. Their CP field and integrity monitoring portfolio competes directly with M.C. Miller's corrosion testing and CP survey product line.
• American Innovations (AII): American Innovations provides cathodic protection survey hardware (CellGuard, Allegro, MX) together with compliance-focused data management software (Pipeline Compliance System). They directly overlap with M.C. Miller's VADER/VoltTab hardware and ProActive data management positioning.

Broad incumbents

• Fluke Corporation: Fluke is a leading global manufacturer of handheld electrical measurement instruments used by technicians in industrial, utility, and field-service settings. While not a CP specialist, Fluke's digital multimeters and insulation testers increasingly compete for the same technician's tool budget that includes M.C. Miller's voltmeters.
• Megger: Megger is an established electrical test and measurement instrumentation manufacturer serving power utilities, industrial, and infrastructure markets. Their low-resistance ohmmeters and insulation testers partially overlap with M.C. Miller's LC-4.5 and insulation checkers, though Megger is a broad portfolio incumbent rather than a CP specialist.
• Elcometer: Elcometer manufactures a broad range of coating, corrosion, and inspection instruments used across industrial assets. They serve overlapping pipeline and concrete inspection customers but operate across a wider coatings/NDT portfolio than M.C. Miller's CP-focused offering.

Emerging players

• MetriCorr: MetriCorr offers remote, wireless cathodic protection and corrosion monitoring instrumentation and data services. They are a smaller, technology-forward peer addressing the same CIPS/DCVG-style survey customer base that M.C. Miller targets with VADER and VoltTab.

Regional players

• Petrochem Inspection Services / CP Solutions: CP Solutions (and similar regional CP service and equipment providers) deliver cathodic protection survey, design, and equipment services to pipeline and storage tank operators. They address the same end customer and cathodic protection workflow as M.C. Miller, primarily on a regional/service-led basis.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@mcmillerco

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about M.C. Miller Co