English Dictionary

ready reckoner

名詞

歴史的

(historical) A printed book or table containing precalculated values, often multiples of given amounts. / A computer program which calculates values; an online calculator.

日本語の意味

（歴史的な意味で）あらかじめ計算された数値（例えば所定の数の倍数など）が記載された印刷物または表。 / （現代的な意味で）数値を計算するプログラム、またはオンライン上の計算ツール。

Before calculators, shopkeepers relied on a ready reckoner to quickly determine prices and taxes for bulk purchases.

電卓が普及する前、商人たちは大量購入の価格や税額をすばやく算出するために、計算早見表を頼りにしていた。

意味（1）

(historical) A printed book or table containing precalculated values, often multiples of given amounts.

Nor did he trouble his borrowers with abstract calculations of figures, or references to ready-reckoners; his simple rule of interest being all comprised in the one golden sentence, ‘two-pence for every half-penny,’ which greatly simplified the accounts[…]

意味（2）

A computer program which calculates values; an online calculator.

ready reckoners （ plural ）