TS 2663 EN 60139

TS 2663 EN 60139 is a technical standard on how to prepare outline drawings for cathode-ray tubes. Its focus is not limited to the tube body itself: it also addresses the same drawing approach for tube components, subassemblies and ancillary parts, with the aim of encouraging a consistent practice. In practical terms, it helps technical drawings present dimensions, mounting relationships and connection points in a comparable way for CRT-based products.

The technical role of outline drawings

Cathode-ray tubes belong to the classic family of electronic vacuum tubes, and their physical envelope, mounting features and interfaces need to be identified clearly in engineering documentation. An outline drawing serves as a common reference for design, manufacturing and specification work by showing the external dimensions and the spatial relationship of the unit to adjacent parts. The standard is about drawing preparation guidance rather than a performance test method; its value lies in promoting a shared documentation practice across different designs and suppliers.

What the scope is organised around

• The external dimensions and general layout of the cathode-ray tube
• A common outline-drawing approach for tube components
• Representation of tube subassemblies in technical documentation
• Ancillary parts and connection arrangements shown with the same drawing logic
• The broader objective of encouraging uniform drawing practice

The standard sits within the terminology and drawing-convention environment used for electronic tubes and electrical/electronic engineering drawings. That makes it relevant wherever product descriptions, cataloguing, or dimensional definition depend on clear and consistent technical graphics. Its contribution is essentially documentary: it supports disciplined presentation of CRT-related hardware without turning that presentation into a test or approval scheme.