A method to multiply or divide any number of figures - by a like or a less number, so expeditely, that any fifty figures may either be multiplied or divided by any fifty figures, all in one line, in five minutes time. ... Invented by Quin Mackenzie-Quin

Förlag	År	Ort	Om boken	ISBN
printed for the author	1750	England, London	[2],iv,[2],26p.,plates ill.,tables 2⁰.