ready reckoner

Origin of ready reckoner

First recorded in 1750–60

The ready-reckoner was, therefore, the money-maker for Morgan, who seemed to carry an inexhaustible supply.

The Bondboy |George W. (George Washington) Ogden
He had no more need for a ready-reckoner than a centipede has of legs.

The Bondboy |George W. (George Washington) Ogden
True, all turns on your Ready-Reckoner being moderately correct,—being not insupportably incorrect!

Past and Present |Thomas Carlyle
Mr. Dowling's tables are well put together as a ready-reckoner for the conversion of one system into the other.

French Polishing and Enamelling |Richard Bitmead

We have checked that statement, with the aid of a ready-reckoner and a Latin dictionary, and we find it substantially correct.

Punch, or the London Charivari, Vol. 146, March 18, 1914 |Various

ready reckoner

a table of numbers used to facilitate simple calculations, esp one for applying rates of discount, interest, charging, etc, to different sums