Profile: DRE. Inc markets new, preowned and refurbished anaesthesia machines, surgical tables, patient monitors, surgery lights & a wide variety of used medical equipments. We offer Matrx Fraser RA Relative Analgesia Machine - Nitrous System which is used in medical and dental field. This relative analgesia machine is designed with a built-in fail-safe that guarantees a minimum delivery of 3 lpm of oxygen. This nitrous system is available in portable stand mount, wall mount, and under the counter configurations. We also offer sedation dentistry equipments.