ready reckoner

Tanımlar (İngilizce)

1. isim 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[…]”

2. isim A computer program which calculates values; an online calculator.