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Curtis — 4-Step Carbon Steel UT Calibration Block
Carbon Steel Ultrasonic Thickness Calibration Block with 0.25"–1.00" Steps & Case SKU: CB04CSOverview
The Curtis 4-Step Carbon Steel UT Calibration Block is a precision reference block designed for ultrasonic thickness gauge calibration, linearity checks, and measurement verification. Manufactured from carbon steel, this block provides known thickness values that help technicians confirm instrument accuracy before and during ultrasonic inspection work.
This 4-step configuration includes thicknesses of 0.25", 0.50", 0.75", and 1.00", making it a practical calibration tool for routine wall thickness measurement, corrosion monitoring, and QA/QC inspection workflows. Its stepped design allows inspectors to verify gauge response across multiple reference points using one compact block.
Supplied with a case, the CB04CS provides a protected and organized calibration solution for field, shop, and laboratory NDT applications where reliable ultrasonic thickness measurement setup is required.
What's Included
| Item | Details |
|---|---|
| Calibration Block | 4-step UT calibration block |
| Material | Carbon steel |
| Step Thicknesses | 0.25", 0.50", 0.75", 1.00" |
| Measurement System | Inches |
| Case | Included |
| Manufacturer | Curtis |
| SKU | CB04CS |
Box Dimensions & Shipping Weight (Estimated)
| Parameter | Imperial |
|---|---|
| Length | 8.0 in |
| Width | 6.0 in |
| Height | 3.0 in |
| Dimensions (L × W × H) | 8.0 × 6.0 × 3.0 in |
| Weight | 4.0 lb |
Key Specifications
| Parameter | Details |
|---|---|
| Product Type | Ultrasonic calibration step block |
| Block Type | 4-Step Block |
| Material | Carbon steel |
| Thickness Steps | 0.25", 0.50", 0.75", 1.00" |
| Measurement System | Imperial / inches |
| Case Included | Yes |
| Application | Thickness gauge calibration and verification |
| Manufacturer | Curtis |
| SKU | CB04CS |
Performance Features
Four Reference Thickness Steps
Provides 0.25", 0.50", 0.75", and 1.00" reference points for ultrasonic thickness calibration.
Carbon Steel Construction
Supports calibration workflows requiring a steel reference material for industrial thickness inspection.
Gauge Verification Support
Helps confirm thickness gauge accuracy, response, and linearity across multiple known values.
Protective Case Included
Supports organized storage, transport, and protection of the calibration block between inspections.
User-Friendly Design
Compact 4-step format for practical calibration use
Inch-based step values support common industrial inspection workflows
Included case helps keep the block protected and organized
Suitable for field, shop, and laboratory calibration procedures
Designed for routine ultrasonic thickness gauge verification
Built for Industrial Environments
Durable carbon steel construction for repeated calibration use
Suitable for professional NDT and QA/QC environments
Practical for maintenance, fabrication, and inspection programs
Built for field and shop ultrasonic testing workflows
Supports consistent calibration practices in industrial inspection applications
Compatibility
Compatible with:
Ultrasonic thickness gauges
Ultrasonic flaw detectors with thickness measurement capability
Imperial thickness calibration workflows
Carbon steel reference calibration procedures
NDT field inspection kits
QA/QC and laboratory verification programs
Ideal Applications
Ultrasonic thickness gauge calibration
Linearity verification
Field calibration checks
Carbon steel reference applications
NDT equipment verification
QA/QC inspection programs
Laboratory calibration support
Maintenance and field inspection workflows
About Curtis
Curtis provides NDT calibration blocks, reference standards, and inspection support accessories for professional ultrasonic testing applications. Their products are used by inspection teams who require dependable calibration tools for thickness measurement, verification, and quality control workflows.


