1 option
Helmet Speaking Tube Ear Assembly : Object.
- Format:
- Book
- Language:
- English
- Physical Description:
- 1 online resource
- Summary:
- Description: Helmet Speaking Tube Ear Assembly. Ear assembly and rubber tube for early in-flight communication system. Black rubber tube with celluloid ear phone pieces (3 total).
- Notes:
- Description based on online resource (viewed on June 12, 2019).
- Date span of material: n.d.
- Equipment, Sound Communication, Earphone;Rubber; Plastic.
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