NM01LFLETT1/2-50L

A Lead Figure 1/2", Letter, Flat Face, Pack of 50, Letter "L" refers to a set of small, specialized lead characters used primarily in industrial radiography (RT). These lead figures are essential for creating identification markers directly on radiographic film during the exposure process.

Here's a breakdown of what this specific item entails:

• Lead Figure: Indicates the material of the character. Lead is used because its high density effectively blocks X-rays or gamma rays, creating a clear, unexposed (lighter) image of the character on the radiographic film.

• 1/2": This specifies the height of the lead character, meaning the letter "L" will be approximately 0.5 inches tall. This size is commonly used to ensure readability on various film sizes without obscuring critical details.

• Letter: Confirms that the figures are individual letters of the alphabet, rather than numbers or symbols.

• Flat Face: Describes the shape of the lead character's surface that comes into contact with the film. A flat face ensures consistent contact and a sharp, clear impression on the radiograph.

• Pack of 50: This is the quantity in which the individual letter "L" figures are supplied. Having a pack of 50 of a single letter is useful for jobs requiring repetitive markings (e.g., specific part numbers or dates).

• Letter "L": Identifies the specific letter included in this pack.

Purpose in Radiography:

Lead figures are used to:

• Identify Radiographs: Mark films with unique identifiers such as part numbers, weld numbers, dates, inspector initials, and orientation markers (e.g., Left, Right, Top, Bottom).

• Provide Traceability: Ensure that each radiograph can be unequivocally linked back to the specific component, area, and time of inspection.

• Comply with Standards: Many NDT standards (e.g., ASME, API, AWS) require specific information to be included on radiographs for proper documentation and quality control.

How they are used:

The lead figures are typically placed directly on the radiographic film cassette (or sometimes on the object being radiographed, if permissible) in the desired arrangement before the X-ray or gamma-ray exposure. When the radiation passes through, the lead characters block the radiation, leaving their shape visible as a lighter area on the processed film.

Key Features and Benefits:

• High Contrast: Lead's density creates sharp, clear, and easily readable characters on the radiograph.

• Durability: Lead is a soft but durable metal, allowing the figures to be reused many times.

• Standardized Sizing: Ensures consistency and compliance with documentation requirements.

• Essential for Documentation: Critical for maintaining accurate records and traceability in industrial radiography.