Nowadays manufacturers will often use a thermostat bath or solid block where the temperature is held constant relative to a calibrated thermometer. Other thermometers to be calibrated are put into the same bath or block and allowed to come to equilibrium, then the scale marked, or any deviation from the instrument scale recorded.
Amy Winehouse 's boyfriend Reg Traviss has said the late singer had no interest in drugs during their time together.
If the DRE officer's multi-step evaluation process determines that you are indeed under the influence of drugs, you can be charged with DWI or DUI, depending on what the state you are in calls the offense of drugged driving.