Size Matters logo

A remnant of Technomite society, the Shrink Ray can shrink (and grow!) objects to preposterous proportions. More practically, Ratchet can use it to shrink down and enter electromagnetic locks. Once inside, he can use his Grind Boots and OmniWrench 10K to unlock them! While near an Electro-lock, press triangle to enter.
— In-game description, SM

The Shrink Ray is an item in Size Matters. It is a remnant of technomite society which can be used to shrink and grow objects. Ratchet and Clank use the device on many occasions, such as opening magnetic locks by shrinking Ratchet down to enter a lock and open it with the Grind Boots and OmniWrench to unlock them. It can also be used to enter technomite locations that are otherwise too small for Ratchet to access.

Size Matters

Ratchet after using the Shrink Ray.

Otto Destruct also takes the device from Ratchet and uses it on himself in battle.

Behind the scenes

A bug allows the player to carry the Shrink Ray anywhere on Ratchet's hand, performed on Quodrona.