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Librascope's former building in Glendale, which is currently home to offices for Disney Television Animation

Librascope was a Glendale, California, division of General Precision, Inc. (GPI). It was founded in 1937 by Lewis W. Imm to improve aircraft load balancing, and acquired by General Precision in 1941.

Librascope was a manufacturer of early digital computers sold in both the business and defense markets. They hired Stan Frankel, a Manhattan Project veteran and early ENIAC programmer, to design the LGP-30 desktop computer in 1956.

In 1964 Librascope's Avionic Equipment Division at San Marcos has been shifted to the Aerospace Group, GPI as the West Coast facility of the Kearfott Division.[1]

Librascope was eventually purchased by Singer Corporation and moved into the manufacture of marine systems and land-based C3 (Command, Control, Communication) systems for the international defense industry. The company specialized in fire control systems for torpedoes, though they continued to work on a variety of other smaller military contracts through the 1970s.

After Singer was taken over by corporate raider Paul Bilzerian, the company was sold to Loral Space & Communications in 1992. The division was eventually sold to Lockheed Martin and was eventually absorbed into the Lockheed Martin Federal Systems, but is now called Lockheed Martin NE&SS—Undersea Systems.



  1. ^ "1960-1969 Librazettes". Librazette April, 1964: AED Shifts to Aerospace Group; Now Part of Kearfott Division. pp. 1–2. Retrieved 2018-09-05.CS1 maint: others (link)
  2. ^ "1950-1959 Librazettes". December, 1958 Librazette: Company Developes Revolutionary Midget Airborne Digital Computer. pp. 1, 4. Retrieved 2018-09-05.CS1 maint: others (link)
  3. ^ a b c "1960-1969 Librazettes". June, 1962 Librazette: NEW BUSINESS - C-141 Contract; ASN-24: Good Things Come in Small Packages. pp. 1, 4. Retrieved 2018-09-05.CS1 maint: others (link)
  4. ^ "Librascope Product Literature". ASN-24 LICOS Report - 1963. 20 December 1963. Retrieved 2018-09-05.CS1 maint: others (link)
  5. ^ a b KEARFOTT AN ASN-24 Computer Sets|Technical Summary. GPK-33: p. 5. Jul 1967.CS1 maint: others (link)
  6. ^ "2. STATE OF THE ART". Spaceborne digital computer systems - Space vehicle design criteria. Mar 1971. pp. 2-6 (2-12).
  7. ^ "1950-1959 Librazettes". Librazette September, 1959: Librascope Computer Is Centaur "Brain". p. 1. Retrieved 2018-09-05.CS1 maint: others (link)
  8. ^ "AN/ASN - Equipment Listing". AN/ASN-24. Retrieved 2018-09-05.
  9. ^ a b c "Kearfott Aerospace Digital Computers | 102646245 | Computer History Museum". May 1967. GPK-33 Atlas-Centaur Navigation Computer: pp. 12-13, AN/ASN-24(V) Airborne/Aerospace Computer Set: pp. 14-17, AN/ASN-24(G) Airborne/Aerospace Computer Set: pp. 18-19, L-90 Series General-Purpose Digital Computers (L90-1, L90-3): pp. 20-21. Retrieved 2018-09-05.
  10. ^ The C-141A StarLifter / Navigation System for the C-141A. The Navigator. XI. Department of the Air Force, Air Training Command. 1959. pp. 2-11 (602-611).
  11. ^ Mark DiVecchio. "Univac Athena Missile Guidance Computer". 2011.
  13. ^ Datamation. F.D. Thompson Publications. 1962. p. 25.
  14. ^ "1962 PICTORIAL REPORT ON THE COMPUTER FIELD: DIGITAL COMPUTERS - L-2010 GENERAL PURPOSE COMPUTER". Computers and Automation. XI (12): 26. Dec 1962. Archived from the original on Dec 1962.
  15. ^ "ACROSS THE EDITOR'S DESK: New Products - LIBRASCOPE INTRODUCES L-2010 COMPUTER". Computers and Automation. XI (11): 26, 31. Nov 1962. Archived from the original on Nov 1962.
  16. ^ Circuitry with micromodular construction
  17. ^ "1960-1969 Librazettes". Librazette November, 1962 - ENGINEERING - Compact and Rugged. Retrieved 2018-03-25.CS1 maint: others (link)
  18. ^ "Librascope Product Literature". L-2010 Portable General Purpose Digital Computer - 1962. pp. 3, 5. Retrieved 2018-03-25.CS1 maint: others (link)

External links[edit]

  • Librascope Memories, over 60 years of history, including 293 Librazette newsletters, photos, product literature, and company videos.
  • Air Force 473L global communications system