Alcohol Screening Device (ASD) means a breath or saliva device, other than an Evidential Breath Testing Device (EBT), that is approved by the National Highway Traffic Safety Administration and placed on its Conforming Products List for such devices.
Variable-aperture beam-limiting device means a beam-limiting device which has capacity for stepless adjustment of the x-ray field size at a given SID.
Reference biological product means the single biological product licensed pursuant to 42 U.S.C.
explosive actuated fastening device means a tool that is activated by an explosive charge and that is used for driving bolts, nails and similar objects for the purpose of providing fixing;
Evidential Breath Testing Device (EBT) means a device approved by the National Highway Traffic Safety Administration for the evidentiary testing of breath for alcohol concentration and placed on its Conforming Products List for such devices.