This type of logic could get you into trouble. As home inspectors we are also held to what is called a “Standard of Care”, this basically means what the majority of inspectors in your area are doing.
I would venture to say that the vast majority of inspectors in your area have moisture meters. So if you miss a leaking toilet that ends up causing damage to the flooring and it could have been found with a moisture meter, well you can guess the outcome.
Basic tools would be:
A very good flashlight like an Ulta-Stinger
A good moisture meter or two. I own 4 types…
A tape measure or similar.
A non-contact electrical sensor…
An electrical tester. ShureTest or similar
Assortment of screwdrivers
A probe of some type
Half or full face respirator… Very important!
A few crawlsuits or a case of disposable suits (I use disposable suits)
A good sturdy ladder like a Little Giant LG-17 is used by many.
A good camera with low megapix capability and with a 10x zoom.
This is a good starting list. IMVHO, you do not need a CO detector, a gas detector, or anything else like those. As you become experienced you will understand what you need and don’t need pretty quick.
Happy Easter to all!