Shoe-making equipment should stand the test of time (4)
I believe the answer is:
last
'stand the test of time' is the definition.
(I've seen this in another clue)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for last that I've seen before include "Most unlikely" , "stay at the back" , "model for a leprechaun" , "It helps cobbler" , "Shoemaker's model" .)