The investigators have refined the manoeuvre and found a technique that deserves further study to assess whether it can determine tracheal depth. The investigators completed a small (N =30) pilot study of intubation of the trachea (manuscript in preparation), in which investigators palpate over the trachea in the anterior neck to feel the inflated cuff movement while the ETT is moved caudally, then rostrally (described in detail in "Procedures"). The investigator attempted to determine the depth of the endotracheal tube by feeling the cuff move under his fingers in the trachea. The endotracheal tube was then immobilized at that depth, and fibre-optic bronchoscopy used to determine depth of the tip in the trachea. That study showed that the technique was safe and resulted in only one ETT tip of 31 (3.2%) lying too close to the carina (<2.5cm) compared to 4 of 30 (15.4%) in the initial placement (difference not significant). It enabled some refinement with practice. Because the technique involves moving the ETT up and down in the trachea, it may cause irritation of the mucosa and pain. The investigators had no complaints from patients or reports of sore throat from PACU nurses in the pilot study, but did not specifically study that outcome. The present study is a Randomized Controlled Trial (RCT) with ETT correct depth as principal and sore throats as secondary endpoint.