6138

Apollo CM Fuel Quantity Indicator

Currency:USD Category:Collectibles / Autographs Start Price:NA Estimated At:7,000.00 - 8,000.00 USD
Apollo CM Fuel Quantity Indicator

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Auction Date:2016 Oct 20 @ 18:00 (UTC-05:00 : 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
Apollo Command Module Block I fuel quantity indicator manufactured by Simmonds Precision Products, measuring 4.75 x 6 x 5.75, labeled on the reverse, “Display Gage, N.A.A. Control No. ME 181-0049, Contract No. NAS 9-150, Serial No. 08275PDG6040.” Reverse also bears a date of October 29, 1965. Used to measure fuel and oxidizer quantities of the Service Propulsion System (SPS), the front of the unit has four toggle switches, a circular gauge, and two analog counters to provide readouts of propellant quantities used during spacecraft maneuvers; external casing is not present. In very good to fine condition. The primary Quantity Sensing System consisted of 13-foot long cylindrical capacitance probes located in the fuel tanks, which registered changes in fuel level during thrusting to be signaled on the Command Module displays. A rare piece of Command Module hardware that was used for a mission-critical task.