Fast
Shipping
Quick,
Simple Ordering
Clear,
Upfront Pricing
Over 30,000
Happy Customers
Exceptional
Customer Service
Industry's Largest
Catalog
Digital Extensometer / Compressometer
Digital Dial Indicator – 6 × 12 in
The Digital Extensometer/Compressometer (6 × 12 in) is a precision instrument used for measuring strain and deformation in concrete cylinders during compression testing. It is commonly used to determine the modulus of elasticity and Poisson’s ratio in laboratory and quality control environments.
This testing device is widely used with concrete testing equipment in construction, research, and materials labs.
How the Instrument Works
This device combines the functions of a compressometer and an extensometer into a single testing system.
- The compressometer measures axial (vertical) deformation.
- The extensometer measures transverse (horizontal) deformation.
- A third center yoke attaches to the concrete specimen.
- Digital or mechanical indicators record strain during loading.
Using both measurements together provides accurate data on concrete behavior under load.
You can view similar compressometers and extensometers available from Certified MTP.
Key Features
- Third center yoke for horizontal strain measurement
- Digital or mechanical dial indicators
- Simultaneous axial and transverse deformation readings
- Lightweight aluminum yokes
- Cadmium-plated steel components for durability
- Available for 4 in (102 mm) and 6 in (152 mm) cylinders
- Meets ASTM testing standards
Standards Compliance
- ASTM C469 / C469M
This standard is commonly referenced for determining modulus of elasticity using concrete compression testing accessories.
Why Use a Compressometer & Extensometer?
Using both instruments together allows engineers to:
- Measure stress–strain relationships
- Calculate elastic modulus and Poisson’s ratio
- Evaluate concrete mix performance
- Improve structural safety and design accuracy
These tools are essential for labs performing concrete strength testing.
Construction & Materials
- Yokes: Lightweight aluminum
- Hardware: Cadmium-plated steel
- Indicators: Digital or mechanical dial indicators
- Design: Durable, easy to mount, and repeatable results
Designed to integrate seamlessly with concrete cylinder testing equipment.
Typical Applications
- Concrete cylinder compression testing
- Modulus of elasticity testing
- Poisson’s ratio determination
- Concrete mix design validation
- Quality control and R&D laboratories
Frequently used alongside concrete testing machines.
Digital Tape Extensometer (Related Equipment)
A digital tape extensometer is a portable instrument used to measure relative displacement between two reference points.
Key Characteristics
- Stainless steel measuring tape
- Handheld, single-person operation
- Relative movement measurement
- Corrosion-resistant for harsh environments
Often used for structural testing and monitoring equipment.
Typical Digital Tape Extensometer Uses
- Tunnel linings
- Shafts and caverns
- Excavations
- Structural movement monitoring
- Underground construction projects
The Digital Extensometer/Compressometer, 6 × 12 in is a reliable and standards-compliant tool for concrete strain measurement. It delivers accurate axial and transverse deformation data while integrating easily with Certified MTP’s full range of concrete testing equipment. Its durable construction and precise digital measurement make it ideal for engineers, laboratories, and construction professionals.
