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Description / Abstract:
This standard describes a system of nomenclature that provides
designations for glass bulbs used as the envelopes for electric
lamps. This system is shown in customary (inch-based) units and SI
(metric) units.
The nomenclature system is intended for application with bulbs
that originate both as parts and as stock. As a part, a bulb is
assembled directly into finished lamps without major alterations.
As stock, a bulb may be re-worked or altered during lamp assembly,
while maintaining its basic identifying characteristics.