TY - MANSCPT DB - Science History Institute DP - Science History Institute M2 - Courtesy of Science History Institute. Rights: In Copyright - Rights-holder(s) Unlocatable or Unidentifiable TI - Helipot Heading Indicator ID - 3484zh469 AU - Hesketh, Dean D. DA - 1960/// YR - 1960 AV - Beckman Historical Collection, Box 86 VL - Beckman Historical Collection, Box 86 AN - Beckman Historical Collection, Box 86 UR - https://digital.sciencehistory.org/works/3484zh469 KW - Aeronautical instruments KW - Beckman Instruments, Inc. LA - ER -