It was discovered during a number a searches on Thursday night.
Officers and student officers attended a number of incidents, including 3 domestic ones.
Knuckle dusters are banned from being imported, made or sold in the UK.
It is also a crime to carry such a weapon in a public place.
Five teenagers arrested after North Devon fire
Murder investigation underway
North Devon house fire treated as arson
One person still missing
Cornwall charity is sending aid to hurricane victims
Teams help with devastation
Huge tuna caught off Devon breaks record
What a wopper!
Devon and Cornwall Police gets another bad report
Three out of three areas 'require improvement'
Fears for future of Torquay's custody centre
MP warns top cop about review
