Calibration Services

What Calibration Services does

Calibration Services Inc. (CSI) is a family-owned, ISO/IEC 17025-accredited calibration and equipment lifecycle services firm headquartered in Emlenton, Pennsylvania, with origins dating to the late 1960s and continuous operation under the Stump family since 1983. CSI provides precision calibration of physical testing instruments across force (compression to 800,000 Lbf, tension to 250,000 Lbf), torque, dimensional, mass, pressure, temperature, and construction materials testing disciplines, plus proof load testing for lifting equipment. All measurements are NIST-traceable and performed in accordance with ASTM, ISO, ANSI, AASHTO, PCI, and MIL standards under ANAB Certificate L1174-1, with technicians trained directly by manufacturers and the firm's principals serving on ASTM committees.

The company operates a dual-channel delivery model: a fleet of temperature-controlled mobile service vehicles dispatches to customer sites across 14+ states and U.S. Caribbean territories, while an 8,000 sq ft in-house laboratory in Emlenton supports walk-in, drop-off, and while-you-wait work with 1–3 business-day turnaround. Complementary repair and reconditioning services extend equipment life using OEM parts and retrofits. CSI generates revenue through per-job, quote-based pricing across more than 2,100 active customers in 10+ industry verticals (construction materials testing, aerospace, automotive, lifting/crane operations, R&D, and general manufacturing). In 2025 the company joined the Accredited Labs network of 28 calibration firms, extending its effective geographic reach to a national referral platform while preserving its local brand and family-operated service model.

Name

Calibration Services

Legal name

Calibration Services Inc.

Website

https://calibrationinc.com

Company type

Private

Founded year

1969

Operating status

Operating

Headcount range

1–10 employees

Short description

Calibration Services Inc. is an ISO/IEC 17025-accredited, family-owned calibration, repair, and reconditioning firm in Emlenton, PA serving construction materials, manufacturing, lifting, and R&D customers across 14+ states via mobile and in-house lab services.

Ownership category

akta.pro rank

Product category

Instrument Calibration Services

NAICS

Testing Laboratories and Services (54138), Testing Laboratories and Services (541380), Electronic and Precision Equipment Repair and Maintenance (811210)

SIC

Services-Testing Laboratories (8734), Measuring & Controlling Devices, Nec (3829)

akta.pro primary industry

Calibration Services & Standards (Calibration labs, reference standards, traceability services) (IMAGAFAH)

akta.pro secondary industry

Weighing Systems / Onboard Scales Calibration & Certification (TLAKANAN)

Keywords

• ISO 17025 calibration
• Force calibration services
• Torque calibration services
• Dimensional calibration
• Pressure calibration services

Headquarters

HQ city

Emlenton

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Others

Revenue model

1. Accredited Calibration Services: CSI generates primary revenue through accredited calibration services for physical testing instruments including force, dimensional, mass, pressure, torque, and temperature equipment. Services are delivered on-site via mobile fleet or at the in-house laboratory. Calibration certificates are issued post-service, with on-site results delivered within 7 business days and in-house results within 2-3 business days. Revenue is driven by per-instrument or per-service pricing, typically quoted per job based on equipment lists submitted by customers.
2. Repair & Reconditioning Services: CSI offers equipment repair, rebuild, and full reconditioning services as a secondary revenue stream. Services range from preventative maintenance to complete equipment restoration using OEM parts, including retrofit upgrades with modern sensors and software. Reconditioned equipment carries a new-machine-status warranty. Training for customer lab personnel is also provided as part of service packages.
3. Proof Load Testing: Proof load testing services for hoists, cranes, and lifting equipment, applying controlled test loads to verify structural integrity and safe operation at rated working load limits. This safety-critical service follows OSHA and ANSI protocols and generates certification documentation for regulatory compliance and insurance requirements.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

CSI provides ISO/IEC 17025 accredited calibration of physical and mechanical testing instruments across force (compression up to 800,000 lbf and tension up to 250,000 lbf), torque, dimensional, mass, pressure, and temperature disciplines, with traceability to NIST national measurement references. Service is delivered both on-site via temperature-controlled mobile vehicles and at CSI's 8,000 sq ft Emlenton, PA laboratory, and is supported by repair, reconditioning, retrofit, and proof load testing services for hoists, cranes, and lifting equipment.

Product overview

Calibration Services Inc. (CSI) operates as a calibration and repair services firm offering a portfolio of precision calibration services for physical testing instruments. The core service offering includes Force Calibration (compression to 800,000 Lbf, tension to 250,000 Lbf), Torque Calibration, Mass Calibration, Dimensional Calibration, Pressure Calibration, Temperature Calibration, Construction Materials Testing Equipment Calibration, and Proof Load Testing. Supporting services include Repair & Reconditioning (extending equipment life through OEM parts and retrofits) and specialized extensometry and geotechnical equipment calibration. CSI delivers services both on-site via temperature-controlled service vehicles and in-house through their 8,000 sq ft facility in Emlenton, PA. The company is ISO/IEC 17025 accredited and joined the Accredited Labs family in 2025.

Differentiator

Problem solved

Functional benefit

Products and services

• Force Calibration Accredited force calibration verifying and adjusting force measuring instruments to ensure accurate measurement of push, pull, compression, and tension forces, with capability covering compression testing machines up to 800,000 lbf and tension to 250,000 lbf.
• Torque Calibration Accredited torque calibration verifying and adjusting torque measuring instruments to deliver precision and reliability for critical assembly operations, including verification and adjustment of torque wrenches across the full measurement range of customer instruments.
• Mass Calibration Accredited mass calibration verifying and adjusting weighing instruments to ensure accurate mass measurements, performed using certified reference mass standards with NIST-traceable values.
• Dimensional Calibration Accredited dimensional calibration verifying and adjusting measuring instruments for accurate length, width, height, diameter, and angular measurements, using traceable reference standards.
• Pressure Calibration Accredited pressure calibration verifying and adjusting pressure measuring instruments for accurate gauge, absolute, differential, and vacuum pressure measurements across specified ranges.
• Temperature Calibration Accredited temperature calibration verifying and adjusting temperature measuring instruments using precision controlled temperature sources and calibrated reference thermometers.
• Construction Materials Testing Equipment Calibration Specialized accredited calibration services for testing instruments used to evaluate concrete, asphalt, soil, aggregates, and other construction materials according to ASTM and AASHTO standards, supporting CMT laboratory compliance with ISO/IEC 17025 and AASHTO accreditation requirements.
• Proof Load Testing Safety verification service applying controlled test loads to lifting equipment such as hoists, cranes, crane scales, and dynamometers to verify structural integrity, load-bearing capacity, and safe operation at or above rated working load limits, with OSHA/ANSI-compliant certification documentation.
• Repair & Reconditioning Equipment repair, rebuild, and full reconditioning services extending equipment life using OEM parts, including preventative maintenance, full rebuilds, and retrofit services to upgrade testing capabilities with modern sensors, software, and components.
• Geotechnical Equipment Calibration Accredited calibration services for proving rings, pressure transducers, dial indicators, LVDT/LDTs, and related geotechnical testing instruments.
• Prestress Equipment Calibration Accredited calibration services for prestress jacks, post-tensioning rams, multi-strand jacks, and dead-end load cell systems used in prestressed concrete applications.
• Extensometry and Strain Device Calibration Accredited calibration services for extensometers (tension and compression) up to 30 inch gauge length, crack extensometers, compressometers, and rock-core testing devices.

Quantifiable outcome

• On-site calibration certificates delivered within 7 business days of service
• +3 more outcomes

Named customers1 record

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Accredited LabscoreOthers · 1 January 2025CSI joined the Accredited Labs family in 2025. Accredited Labs is a national calibration and equipment lifecycle service platform spanning 28 companies. CSI retains its family-operated identity while gaining access to Accredited Labs' national resources, technical support, innovation, and cross-network referral capabilities. The partnership enables CSI to offer expanded services while maintaining its local brand and personalized service model.

Scale indicators7 records

Recent moves8 records

Expansion highlights4 records

Direct peers

• Transcat: Publicly traded provider of calibration services and test/measurement instruments with a national mobile fleet and ISO 17025-accredited labs. Directly comparable to CSI in physical calibration scope and B2B field-service delivery model.
• Davis Calibration: Independent ISO 17025-accredited calibration firm providing on-site and in-house mechanical, dimensional, and pressure calibration. Closely comparable to CSI in service portfolio and B2B field model.
• Trescal: Global calibration services company with broad physical and dimensional calibration scope across multiple industries. Closely comparable to CSI's ISO 17025-accredited, multi-discipline offering and growing network-of-labs model.
• Micro Precision Calibration: ISO 17025-accredited calibration lab providing on-site and in-house calibration of mechanical, dimensional, and electronic test equipment. Directly comparable to CSI in scope and service delivery.
• Simco Electronics: U.S.-based calibration services provider offering ISO 17025-accredited calibration and repair of test and measurement equipment. Comparable in customer base (regulated industries) and field-service delivery.
• Fox Valley Metrology: Regional U.S. calibration laboratory offering dimensional, mechanical, and physical calibration services to industrial customers. Comparable to CSI in regional, accredited, multi-discipline calibration scope.

Emerging players

• Instron: Manufacturer of materials testing instruments (force/tension/compression) that increasingly bundles calibration and service contracts. Comparable as a provider of force calibration-relevant services to industrial labs.
• NSI Lab Solutions: Provider of laboratory calibration standards and reference materials, overlapping CSI's quality-focused customer base in regulated testing environments. Comparable at the laboratory-quality and standards level.

Broad incumbents

• Element Materials Technology: Global testing, inspection, and certification (TIC) company serving construction materials, aerospace, and industrial sectors. Comparable to CSI's CMT-focused calibration work at a much larger scale and broader scope.
• Accredited Labs: National calibration and equipment-lifecycle platform with 28 partner companies, of which CSI is now a member. Comparable as the broader parent/incumbent in CSI's network, operating at greater scale and geographic reach.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/calibration-services-inc
• Facebookfacebook.com/calservicesinc

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

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 Calibration Services