difference engine

difference engine is a mechanical calculator or mechanical calculator.

Overview

It is associated with United Kingdom. The record gives 1822 as its date of establishment or first appearance. Catalogue entries for instruments state maker, signature, completeness and working condition. VALÉORINE records this subject so that lots referring to it can be described consistently.

In detail

Automatic mechanical calculator designed to tabulate polynomial functions

Sources

Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.

reference work · Reputable secondary · Wikipedia
“Difference engine”, English Wikipedia, consulted as further reading
Consult the source
reference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q628007: difference engine
Consult the source