The analyses of a text #4

The narrator recalls his adolescence.
He, his great aunt Miss Trotwood and his friends came to Ham's office to meet Mr. Micawber who is the clerk for local lawyer Uriah Hip, whom he struck in the cheek because of his mean behavior.
Uriah Hip is the partner of Mr. Wickfield, who is very sick now, whose only daughter Agnes is narrator's old friend, whom Uriah Hip has an affection for.
Now Mr. Micawber is exposing Uriah Heep having done evil deeds, reading a prepared letter.
"Mr. W" refers to Mr. Wickfield.
Mr. Micawber have lived since Uria Hip and his mother moved in with Mr. Wickfield.

Chapter 52 I ASSIST AT AN EXPLOSION

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'"Third. And last. I am now in a condition to show, by - HEEP'S - false books, and - HEEP'S - real memoranda, beginning with the partially destroyed pocket-book (which I was unable to comprehend, at the time of its accidental discovery by Mrs. Micawber, on our taking possession of our present abode, in the locker or bin devoted to the reception of the ashes calcined on our domestic hearth), that the weaknesses, the faults, the very virtues, the parental affections, and the sense of honour, of the unhappy Mr. W. have been for years acted on by, and warped to the base purposes of - HEEP. That Mr. W. has been for years deluded and plundered, in every conceivable manner, to the pecuniary aggrandisement of the avaricious, false, and grasping - HEEP. That the engrossing object of- HEEP - was, next to gain, to subdue Mr. and Miss W. (of his ulterior views in reference to the latter I say nothing) entirely to himself. That his last act, completed but a few months since, was to induce Mr. W. to execute a relinquishment of his share in the partnership, and even a bill of sale on the very furniture of his house, in consideration of a certain annuity, to be well and truly paid by - HEEP - on the four common quarter-days in each and every year. That these meshes; beginning with alarming and falsified accounts of the estate of which Mr. W. is the receiver, at a period when Mr. W. had launched into imprudent and ill-judged speculations, and may not have had the money, for which he was morally and legally responsible, in hand; going on with pretended borrowings of money at enormous interest, really coming from - HEEP - and by - HEEP - fraudulently obtained or withheld from Mr. W. himself, on pretence of such speculations or otherwise; perpetuated by a miscellaneous catalogue of unscrupulous chicaneries - gradually thickened, until the unhappy Mr. W. could see no world beyond. Bankrupt, as he believed, alike in circumstances, in all other hope, and in honour, his sole reliance was upon the monster in the garb of man,"' - Mr. Micawber made a good deal of this, as a new turn of expression, - '"who, by making himself necessary to him, had achieved his destruction. All this I undertake to show. Probably much more!"'
[David Copperfield by Charles Dickens]
1. I'd like to know if "to" means "for."
2. I'd like to know what "completed but a few months since" means.
3. I'd like to know if "as" clause is the object of "meshes."
4. And I'd like to know if the blue clause is the object of "believed."
Thank you in advance for your help.