Overview: The document provides detailed specifications and features of precision small dial indicators, specifically models 803 and 805, including various versions such as standard, shockproof, waterproof, and inch versions. It also includes information on accessories and contact points for these indicators.

Specifications: The dial indicators are available in different models with varying measuring ranges, accuracy, and features. Key specifications include:

• Model 803 A and 805 A: Standard versions with high precision gears, lifter protection cap, adjustable tolerance markers, and chrome-plated housing.
• Model 803 S: Shockproof version with similar features to the standard version.
• Model 803 SW: Waterproof and oil-proof version with hermetically sealed components to prevent contamination.
• Model 803 SB: Limited measuring range for error-free readings and large overtravel for easier insertion of test items.
• Model 803 AZ: Inch version with an adapter bush for adapting mounting shank to inch bore.

Technical Data: The document provides a table with technical data for each model, including range, readings, dial face diameter, overtravel, mounting shank diameter, measuring force, and order numbers.

Accessories: Various accessories are available for the dial indicators, including adapter bushes, splash guard covers, mounting lugs, and contact points. The document lists standard, spherical, flat, conical, wedge-shaped, and special contact points with their respective order numbers.

Dimensions: Dimensions for each model are provided according to DIN EN ISO 463 standards, detailing measurements such as diameter, length, and other relevant dimensions.

Additional Features: The document highlights additional features such as:

• Hermetically sealed components for certain models to prevent contamination.
• Adjustable tolerance markers for precision measurement.
• High precision gears and pinions for accurate readings.

Conclusion: The document serves as a comprehensive guide for selecting and using precision small dial indicators, providing essential information on specifications, features, and available accessories to ensure accurate and reliable measurements in various applications.