ale-firkin

As the argument stands it reminds one of Lowell's remark in relation to this style of criticism: "Scarce one but was satisfied that his ten finger tips were a sufficient key to those astronomic wonders of poise and counterpoise ... in his metres; scarce one but thought he could gauge like an ale-firkin that intuition whose edging shallows may have been sounded, but whose abysses, stretching down amid the sunless roots of Being and Consciousness, mock the plummet."

The Critics Versus Shakspere A Brief for the Defendant Francis Asbury Smith 1876

Bohemia, -- as if Shakespeare's world were one which Mercator could have projected; scarce one but was satisfied that his ten finger-tips were a sufficient key to those astronomic wonders of poise and counterpoise, of planetary law and cometary seeming-exception, in his metres; scarce one but thought he could gauge like an ale-firkin that intuition whose edging shallows may have been sounded, but whose abysses, stretching down amid the sunless roots of Being and Consciousness, mock the plummet; scarce one but could speak with condescending approval of that prodigious intelligence so utterly without congener that our baffled language must coin an adjective to qualify it, and none is so audacious as to say

Among My Books First Series James Russell Lowell 1855