Specifications:
The document details precision measuring instruments and accessories, such as digital setting devices for precision bore gauges, universal comparative measuring instruments, and centring devices. Key specifications include measuring ranges, repeatability, and theoretical total errors. Features include hardened measuring faces, large LCD displays, and electronic measuring systems.

Procedures:
The instruments are suitable for both internal and external measurements, offering functions like on/off, mm/inch conversion, zero setting at any position, and preset functions. They are packaged individually, with some models including accessory sets for specific applications.

Standards and Recommendations:
The document references work standards, highlighting compatibility with various manufacturers and versions. Recommendations include using specific gauge blocks for pre-setting and the option to request special application accessories.

Key Data from Tables:
Tables provide detailed specifications for different models, including measuring spans, weight, and part numbers. Accessories such as measuring arms, depth stops, and probes are listed with their dimensions and weights.

Critical Information:
Important parameters include measurement repeatability, uniform measuring force via ratchet stops, and centring error limits for centring devices. The document also notes the availability of special designs and accessories for customized applications.