General purpose gauge measures a variety of materials
Range: 0.025 - 6.00 inches - 0.60 - 150.00 mm
Resolution:0.001" (0.01 mm)
Datalogging: NO
Measuring Range in Steel 0.025 - 6.00 inches 0.60 - 150.0 mm The TI-25M Ultrasonic Thickness Gauge accurately measures wall thickness and the extent of corrosion of all metals, ceramics, glass and most rigid plastics - from only one side! The TI-25M Ultrasonic Thickness Gauge can be used in a Single Thickness Reading mode or in a Scan mode , where the probe is dragged over a large measuring area. The minimum thickness reading recorded during the "scan" will be displayed. The TI-25M Ultrasonic Thickness Gauge probe is waterproof and can be submerged in water. The gauge is impact-resistant and environmentally sealed to provide trouble-free operation under the toughest field conditions
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Features
- Resolution of 0.001 inch (0.01 mm)
- Large, back-lit LCD display retains last reading
- Simple operator controls virtually eliminate training
- Special-purpose probes are offered for a variety of applications
- Switch-selected units for inches or mm
- For underwater surveying, probe cable lengths up to 50 feet are optionally
- CE Certified
- Includes NIST Calibration Certificate
Typical Applications

Measuring Limits
 | Minimum Radius for Convex Surfaces | 0.350" (8.89 mm) | Minimum Radius for Concave Surfaces | 3" (76.2 mm) |  | Minimum Headroom | 1" (25.0 mm) |  | Minimum Sample Diameter | 0.150" (3.8 mm) |  | Minimum Substrate Thickness - F | na | Minimum Substrate Thickness - NFe | na |
Specifications
Range in Steel | 0.025-6.00" (0.60-150.0 mm) | Resolution | .001" (0.01 mm) | Display | 4½ - Digit, 0.5" Back-lit LCD | Velocity Range | 6,500-33,000 ft./sec (2000-10,000 m/sec.) | Probe | 7.5 MHz, 0.25" Diameter (6.35 mm) | Cable | 4 ft. (1.2 m) waterproof cable with non-polarized, quick-disconnect connectors. Optional lengths up to 50 ft. (15 m). | Temp. Limits | Ambient: -20 to 120° F (-30 to 50° C) Material: -0 to 200° F (-20 to 100° C Special high temperature probes are optionally available. | Battery Type | Two AA batteries | Battery Life | 200 hours | Weight | 7 ounces (196 g) | Size | 2.5 x 4.5 x 1.25" (64 x 114 x 32 mm) | Accessories Included | Probe/cable assembly. 4 oz. bottle of coupling fluid, NIST Calibration Certificate, 2 AA batteries, operating instructions, hard-plastic carrying case. | Warranty | Gauge: 5 Years Probes: 90 Days |
Special Purpose Models
Model | Description | TI-25M-H | High Temperature for surfaces up to 650° F or 343° C. Transducer is 0.5" 5.0 MHz, range .050" to 19.99" | TI-25M-107 | Cast Iron / Plastics | TI-25M-HW | Heavy Wall (0.040-19.999") |
Complete Kit
The TI-25M Ultrasonic Thickness Gauge is supplied as a complete kit with the gauge, probe, 4 oz. bottle of coupling fluid, 2 AA batteries, NIST Calibration Certificate, and Operating Instruction Manual - all in a foam-fitted carryingcase 
Optional Accessories
   CF12 Coupling Fluid - Used to create an ultrasonic coupling between the probe and material to be measured
- 12 oz Bottle
|  |  V-Block Transducer Holder - The V-Block transducer holder offers the operator greater control and repeatabily when measuring on pipes and other curved areas
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F.A.Q.
Do Checkline Ultrasonic Thickness Gauges require any training for use?
No. Checkline Ultrasonic Thickness Gauges are designed for simple operation and feature easy-to-use instruction manuals. We also provide technical support via telephone and/or email, and a 30-day money back guarantee.
Are Checkline Ultrasonic Thickness Gauges calibrated at the factory?
Yes. Checkline Ultrasonic Thickness Gauges arrive fully calibrated and ready to measure.
Do Checkline Ultrasonic Thickness Gauges include Certificate of Calibration?
Yes. Checkline Ultrasonic Thickness Gauges Include NIST-Traceable Calibration Certificate, CE-Certified
Can I measure the thickness of non-metallic materials like plastic and rubber with Ultrasonic Thickness Gauges?
Yes. Checkline Ultrasonic Thickness Gauges features several preprogrammed sound velocities for common materials.
Can Checkline Ultrasonic Thickness Gauges measure cast/ductile iron or cast aluminum?
Yes. Checkline Ultrasonic Thickness Gauges instruments are designed to accurately measure the wall thickness of carbon steel, aluminum, stainless steel and plastic.