The most common and most likely answer to this crossword clue is the 9 letter word EXAMINERS
E
X
A
M
I
N
E
R
S
More clues leading to the result EXAMINERS
Buddy explains!

The straight part
We know that "inspectors" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case inspectors = examiners.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does EXAMINERS mean?
EXAMINERS noun- A person who investigates someone or something.
- A person who sets an examination.
- A person who marks an examination.