Foreword
Cooperating organizations
Dimensions
Section one: General
1. Scope
2. References
3. Definitions
4. Drawings and dimensions
5. Pin (or contact) numbering
6. Pin soldering
7. Resilient pins
8. Tolerances on pin position
9. Gauging
10. Gauges and pin straightening tools
11. Function of spigot and key
Section two: Drawings and dimensions of electronic
tube caps
CT4
CT5
CT6 (screw type)
CT9
CT11 (cavity cap)
Section three: Drawings and dimensions of electronic
tube reference line gauges for CRTs
RL1
Section four: Drawings and dimensions of electronic
tube bases
B2D/1.1 (base)
B3G/1.1 (base)
B3G/2.1 (outline, without top cap)
B4A/1.1 (base)
B4A/1.2 (base pin and wafer slot position gauge)
B4B/1.1 (base)
B5/1.1 (base)
B5/1.2 (base pin position gauge)
B5A/1.1 (base)
B7/1.1 (base)
B7/1.2 (base pin position gauge)
B7D/1.1 (base)
B7G/D/1.1 (base)
B7G/D/1.2 (base pin position gauge)
B7G/F/1.1 (base)
B7G/F/2.1 (tube outline, without top cap)
B8F/1.1 (base)
B8F/1.2 (base pin and spigot position gauge)
B8F/1.5 (base contact ring gauge)
B8F/1.6a (base contact spigot gauge I)
B8F/1.6b (base contact spigot gauge II)
B8-MO/1.1 (Mazda octal base)
B8-MO/1.2 (Mazda octal base pin and spigot position
            gauge)
B9/1.1 (base)
B9/1.2 (base pin position gauge)
B9A/D/1.1 (base)
B9A/D/1.2 (pin and tubulation gauge)
B9A/D/1.3 (pin straightening tool)
B9A/F/1.1 (base)
B9A/F/2.1 (tube outline, without top cap)
B12E/1.1 (base)
B12F/1.1 (base)
B12F/1.2 (base pin position gauge)
B12J/1.1 (base)
B12J/1.2 (base pin position gauge)
B14B/1.1 (base)
B14B/1.2 (base pin position gauge)
B14E/1.1 (base)
B14E/1.2 (pin and tubulation position gauge)
B14E/1.3 (pin straightening tool)
B15B/1.1 (base)
B15B/1.2 (base pin position gauge)
B19A/1.1 (base)
B19A/1.2 (base pin position gauge)
B23A/1.1 (base)
B23A/1.2 (base pin position gauge)
B24A/1.1 (base)
B24A/1.2 (base pin and spigot position gauge)
B26A/1.1 (base)
B26A/1.2 (base pin position gauge)
B26A/1.3 (pin straightening tool)
Appendices
A. United Kingdom coded caps
B. United Kingdom coded reference line gauges
     for CRTs
C. United Kingdom coded bases