Examples. 1  I need a tricorder - the convenient, hand-held device featured on Star Trek that can detect life forms even from orbit. Citizendium, the Citizens' Compendium - Recent changes [en] 2  I need a tricorder - the convenient, hand-held device featured on Star Trek that can detect life forms even from.
I should mention that width and length are often interchangeable in representing the same concept - they are distinguished in relation to one another (a box may be thought of as having a 5-inch width and 6-inch length, or a 5-inch length and 6-inch width. Height is usually understood to be the dimension going upwards.
Dimensions are just the measurements of the length and width and hieght. To find the dimensions just measure the object and record the distances.