IEEE N42.5-1965

N42.5-1965 is an American National Standard for Bases for GM Counter Tubes, written for nuclear engineering applications where reliable mounting and electrical interfacing matter. It addresses the base dimensions and related requirements used with Geiger-Müller counter tubes, helping support consistent assembly and interchangeability. For laboratories, instrument makers, and technical users working with radiation detection equipment, N42.5-1965 provides a clear reference point for component compatibility and controlled design.

About N42.5-1965

This standard defines a technical basis for the bases used on GM counter tubes, which are common detector elements in radiation measurement devices. N42.5-1965 is relevant to the mechanical and interface characteristics that allow a tube to fit properly into supporting hardware and associated circuitry. In nuclear engineering contexts, that kind of specification helps reduce variation between parts, supports repeatable construction, and gives purchasers and engineers a shared reference for compliance and evaluation.

Where is N42.5-1965 used?

N42.5-1965 is most relevant in radiation detection equipment that uses Geiger-Müller counter tubes, including bench instruments, survey meters, and related laboratory assemblies. It may also be used by manufacturers, repair shops, and procurement teams that need consistent base compatibility when sourcing or replacing detector components. In practice, the standard supports work where tube mounting, electrical connection, and dimensional fit must align with established equipment requirements in nuclear engineering settings.

Importance in practice

For GM counter tube applications, a clear base specification helps limit fitting problems and reduces the risk of inconsistent assemblies. N42.5-1965 can support design control by giving engineers a stable reference for tube interfaces, which is useful when checking parts during production or maintenance. It also helps with procurement and testing, since buyers and technicians can compare supplied components against a defined standard rather than relying on informal assumptions. That improves consistency and can reduce equipment downtime.

• Base dimensions for GM counter tubes
• Component fit and interchangeability
• Radiation detector assembly reference
• Nuclear engineering technical context