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 - Beckman Model 912 Smoke Meter ID - 5h73pw17b AV - Beckman Historical Collection, Box 77 VL - Beckman Historical Collection, Box 77 AN - Beckman Historical Collection, Box 77 UR - https://digital.sciencehistory.org/works/5h73pw17b AB - This instrument is used to determine smoke density rather than simply detect the presence of smoke or fire. KW - Smoke KW - Scientific apparatus and instruments KW - Beckman Instruments, Inc. LA - ER -