8400K (J Chadwick) Features and Specifications *

The J Chadwick 8400 Optical Depth Micrometer measures the depth of scratches, chips, burrs, and other types of damage on surfaces. It can be used on flat or curved surfaces and on all types of materials and finishes. To use the device, a starting reference point (or "zero point") is established by focusing on the surface next to the damaged area. The depth of the damage is then recorded by focusing on the bottom of the damaged area and reading the measurement from the digital display. This device helps in eliminating guesswork from the decision process of repair or replace, saving resources by identifying parts that can safely be repaired and returned to service, avoiding needless replacement costs.

It is a state-of-the-art tool designed to provide precise and reliable measurements of surface damage, making it an invaluable asset in maintenance and repair operations. This micrometer allows technicians to make accurate "repair or replace" decisions by eliminating guesswork, thanks to its ability to produce quick, accurate, and repeatable results. It is particularly useful in assessing the depth of surface damage on a variety of components including composites, masts, propellers, shafts, and windshields, among others​​​​.

It includes interchangeable bases and lenses, making it versatile for use on almost any surface. The standard kit comprises a digital optical micrometer, various bases (3-leg, 4-leg, and clear acrylic V-block), eyepieces with different magnifications (10X and 20X), objective lenses (4X and 10X), and a scratch sample plate for training. This comprehensive set is housed in a portable case, weighing less than 7 lbs, and is designed for easy transport and use in various environments including MRO stations, FBOs, military bases, and laboratories worldwide. The tool's high accuracy (+/- 0.001” / 0.01mm) and magnification range (80X-200X) ensure detailed and precise inspections​​​​.

The price and features make it a very attractive option compared to similar borescope / fiberscope test sets available on the market.

Features

• Digital Optical Micrometer
• Interchangeable Bases (3-leg, 4-leg, clear acrylic V-block)
• Eyepieces with 10X and 20X magnification
• Objective Lenses with 4X and 10X magnification
• LED Flashlight with Adapter Tip
• Portable Case with Foam Insert
• Scratch Sample Plate for training

Benefits

• Eliminates Guesswork: Provides technicians with precise, repeatable results for accurate "repair or replace" decisions.
• Safety and Resource Efficiency: Prevents the use of substandard parts and reduces the scrapping of serviceable parts.
• Versatility: Suitable for inspecting various surfaces including composites, transparencies, and metals.
• Proven Track Record: Trusted by major MRO stations, FBOs, military bases, and OEMs globally.
• Portability: Lightweight and easy to transport, allowing for use in different environments.

Applications

• Aircraft maintenance, repair, and overhaul (MRO) inspections
• Surface damage evaluation on aircraft components
• Repair-or-replace decision making for damaged parts
• Measuring the depth of scratches, chips, burrs, dents, and corrosion
• Inspection of composite structures and bonded materials
• Inspection of aircraft windshields and transparencies
• Evaluation of propeller blades and rotor masts
• Inspection of drive shafts and transmission components
• Quality control and manufacturing inspections
• Non-destructive inspection (NDI) and preventive maintenance
• Maintenance inspections at Fixed Base Operators (FBOs)
• Military aircraft maintenance and depot-level inspections
• OEM production and quality assurance inspections
• Laboratory and engineering material evaluations
• Aviation training and maintenance education using the included scratch sample plate

Capabilities

• Depth Measurement: Measures the distance between two points at different depths with high accuracy.
• Damage Assessment: Provides detailed inspections for corrosion, cracks, scratches, and other surface damages.
• Visual Width Measurements: Enables visual width measurements at 100X magnification.
• Interchangeable Parts: Offers flexibility with various bases and lenses for different applications and surfaces.
• Magnification Range: Allows for detailed inspections with magnification levels from 40X to 200X.

Specifications

• Accuracy: +/- 0.001” / 0.01mm
• Magnification: 80X-200X
• Range: 0.25” - 1.00”
• Operating Temperature: 0ºC to 40ºC / 32ºF to 140ºF
• Storage Temperature: -10ºC to 60ºC / 14ºF to 140ºF

BASIC INFORMATION

CHARACTERISTICS

*The technical specifications is provided for reference only. Avionteq cannot ensure accuracy of the technical specifications presented herein. The technical data may not relate entirely to all model and versions such as the models sold by Avionteq.