The phrase "a hand's breadth" is correct and usable in written English.
It is typically used to describe a small measurement or distance, often in a figurative sense.
Example: "The gap between the two buildings was only a hand's breadth, making it difficult to pass through."
Alternatives: "a hand's width" or "a hand's span".
In places the water in the side channel where we have embarked is barely a hand's breadth deep.
Thus, if, as is said, he stated as a fact that two objects dropped from the leaning tower of Pisa reached the ground together with not so much as a hand's breadth between them, it need not be inferred that he performed the experiment himself or that, if he did, the result was quite so perfect.
It pierces the fascia of the lateral compartment about a hand's breadth above the ankle and travels to a position approximately in line with the 4th ray of the foot.
Xu Yuan, another female poet of the period, describes Xue's allure: Lotus blossoms as she moves her pair of arches Her tiny waist, just a hand's breadth, is light enough to dance on a palm Leaning coyly against the East Wind Her pure colour and misty daintiness fill the moon.. Hu Yinglin wrote of Xue: Who transplanted this flower of renowned species to the Imperial garden?
The side-handle baton, which officers grip by a 5 1/2-inch handle that juts out about a hand's-breadth from the end and swing in a horizontal arc, was viwed as less likely to strike the head in high-stress situations.
"Every little pebble was distinct, every speckled trout, every hand's-breadth of sand," Mark Twain wrote of his unimpeded glimpse into Lake Tahoe's depths in "Roughing It".
Then the bottle in his hand scraped the rubber corner of an anti-personnel land mine and he came within a hair's breadth of losing life or limbs.
The way she follows his lead, usually stepping a hair's breadth later than he, has its own musical beauty, like a pianist allowing his left hand to follow his right hand in Romantic music.
It will not move it a hair's breadth.
(Dukes beat statutory rape charges by a hair's breadth).
[Stephen Colbert would probably win that contest by a hair's breadth.].
