Table set out to display safety device (4,4)
I believe the answer is:
seat belt
'safety device' is the definition.
(I've seen this before)
'table set out' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'table'+'set'='tableset'
'tableset' anagrammed gives 'SEAT-BELT'.
'to display' acts as a link.
(Other definitions for seat belt that I've seen before include "Safety strap in car - must wear it" , "Safety device worn in car" , "It must be worn in car" , "Testable (anag)" , "Car safety feature" .)