Question

Which phrase is analogous to "its case of massive oak"?

Halfway up the stairs it stands,
And points and beckons with its hands
From its case of massive oak,
Like a monk, who, under his cloak,
Crosses himself, and sighs, alas!
With sorrowful voice to all who pass,—

Answer 1

The phrase which is analogous to "its case of massive oak" is "under his cloak". The outer case of the clock is being compared to the outer garment of the monk.

Answer 2

thanks @resse

Answer 3

wlc