Is accumulated depreciation a contra asset?

Yes

Basically the concept is to provide more detailed information and a method of checks and balances against the depreciation. The original acquisition cost of the asset is preserved this way and always...

There are a number of names for this figure, Book value Carrying amount Essentially, it is the amount that your asset is recorded in your books as.

Depreciable asset - accumulated depraecation = net of Depreciable asset (PPE) Which is the reported PPE(net)

it is neither an asset nor a liability but infact it is recognised as an offset account of related cost in the balance sheet. It is subtracted from the cost of the asset and produces the net book...