The history of the company

Kienzle founded by Johannes Schlenker und Jakob Kienzle in 1883 as "Schlenker & Kienzle" as manufacturer for clocks.
Change name in 1919 to Kienzle Uhrenfabriken KG
Change name in 1922 Kienzle AG
Split the company 1928 Kienzle-Taxameter und Apparate AG (Villingen)and Kienzle Uhrenbau (Schwenningen)
Change name in: 1938 Kienzle-Apparate AG
Change name in 1944 Kienzle-Apparate GmbH
Start of making calculators and bookkeeping machines.
Split the company 1981 VDO-Kienzle (Mannesmann) (KFZ-Sparte) and selling the Datentechnik to DEC
Products:

RECORDING SPEEDOMETER,
TAXIMETERS AND ADAPTERS FOR ADAPTING TAXIMETERS FOR DIFFERENT AUTOMOBILES,
ADDING MACHINES, BOOKKEEPING MACHINES,
WORKING TIME COUNTERS, TIME COMPUTERS, CALCULATORS AND REGULATORS FOR THE ROTATIONAL SPEED AND THE FEED OF MACHINE TOOLS, INCLUDING SPEED AND FEED SELECTORS FOR LATHES