Sistimi ea phefumoloho ea anesthesia e entsoe ka khetla, mohala oa calibration, bolo ea letšoao, slider e tsamaeang, phala ea telescopic, ho loma le lisebelisoa tse ling tse ka sehloohong.Khetla ea mofuta oa D e entsoe ka polystyrene, tube ea telescopic, ho loma, bolo ea li-indicator le slide e tsamaisoang e sebelisa polyethylene joalo ka thepa e tala.