8124

Apollo CM Tunnel Differential Pressure Gauges

Currency:USD Category:Collectibles / Autographs Start Price:NA Estimated At:200.00 - 400.00 USD
Apollo CM Tunnel Differential Pressure Gauges

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Auction Date:2017 Apr 20 @ 18:00 (UTC-5 : EST/CDT)
Location:236 Commercial St., Suite 100, Boston, Massachusetts, 02109, United States
ALS - Autograph Letter Signed
ANS - Autograph Note Signed
AQS - Autograph Quotation Signed
AMQS - Autograph Musical Quotation Signed
DS - Document Signed
FDC - First Day Cover
Inscribed - “Personalized”
ISP - Inscribed Signed Photograph
LS - Letter Signed
SP - Signed Photograph
TLS - Typed Letter Signed
Pair of Apollo Command Module (Block I) differential pressure gauges, measuring 2.25 x 2.25 x 1.5, manufactured by the Glassco Instrument Co., both bearing green labels identifying them as "P/N G-3877" and "NASA P/N 20M32076," with manufacture dates of November 1966. In overall fine condition. These pressure gauges were installed in the docking tunnel to provide the crew with awareness of pressure difference between the Apollo capsule interior and the exterior of the forward hatch.