Small Box Respirator (SBR, or “Gas Mask”) Record Card

A record card that was usually fastened to the base of the SBR hose where it attached to the  filter. It was used to record the hours of use to determine when a new filter, or if a repair was needed.

Classification
Accoutrements
Era
1914 – 1919 (WW 1)
Location of artifact
Case 13/14 WWI

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