Equipment is not an uncountable noun, but a collective noun.
A collective noun is a linguistic term meaning a word that can be used to refer to a group of objects, such as people, animals, or concepts.
The singular refers to a collection of the same kind of device, and in the case of different kinds of devices, the plural form equipments is required. similarly people refers to "people", and peoples refers to "many kinds of peoples".
equipment: English ? [?' kw?pm(?) nt], US? [?' kw?pm?nt]
n. equipment, gear; device.
equipment?equipment, gear, equipment information.
laboratory equipment?laboratory equipment, laboratory apparatus, experimental equipment.
common equipment?common equipment, commonly used equipment, frequently used equipment.