This 16 foot standard metal tape measure announces the measured length with an accuracy of .06 of an inch. Just turn it on and pull it out to the length of the object or distance being measured, and the distance will be announced in a pleasant male British voice. It has a memory mode and can be used to measure consecutive distances that exceed its 16 foot length. It will automatically turn itself off when it is not used for about 15 seconds and will announce a 5 second advance notice of the turn-off. It also speaks in centimeters.