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 Model 964 Servo Amplifier and Model 982 Power Supply ID - hx11xf78v AU - Armstrong & Hess DA - 1950/// YR - 1950 AV - Beckman Historical Collection, Box 85 VL - Beckman Historical Collection, Box 85 AN - Beckman Historical Collection, Box 85 UR - https://digital.sciencehistory.org/works/hx11xf78v KW - Servomechanisms KW - Beckman Instruments, Inc. LA - ER -