Prosím o informace o firmě Kadlec, která za války vyráběla kompasy

Hello, I was approached by a German compass collector, Jean-Patrick Donzey, who asked for information about a company based in Prague that produced compasses during World War II. In my opinion, this is the Kadlec company, as it owns the AK-39 compass. Please provide information about this company, or a link where I can get information.
Mr. Donzey has the largest virtual collection in the world, his website is: www.compassmuseum.com)


Thank you very much in advance for processing my request.
Dušan

Dear colleague,
The Compass Museum lists Kadlec's address as: Prag VIII Troja, Bei der Obstbauanstalt. Which would mean that the company was located on the premises of the Pomological Institute in Troja. Now the Electrotechnical Testing Institute, Pod lisem 2, Troja Cadastre No. 129, Prague 8, is located in these places. The history of the complex and tenants could be known by a company archivist or a monument association in Troja.

In the January issue of Aviation from 1946, I found an advertisement by Kadlec. Unlike the ads of Prague's competitors, the companies Hodek and Prema, which I also enclose, it does not appear in other issues. None of these companies is mentioned in the list of companies included in the national company PAL, the decree on the establishment of which is in issue 8 of the same year. However, the last advertisement for Prema is in the previous issue. Hodek lasted until 1948, when he became part of PAL.

In Aviation + cosmonautics special No. 9 I still found about production during the Protectorate:
(Production of instruments, optics, aggregates, author Ladislav Šindelář)


Kadlec, Manufacture of instruments
Prague 10, Olomoucká tř. 10
Product code dxt
It produced film cameras and various on-board instruments under license (pilot compasses, observation compasses with a horizontal rose, for precise navigation, for sports aircraft, remote measuring instruments, fuel gauges, electric indicators of flaps and landing gear, navigation logarithmic rulers) ..


When I have it open, the rest of the companies in the field in Prague and its surroundings:
Vincenc Hodek, Aviation Instruments
Prague VII - Holešovice, V závětří 3
Product code: jlq
Production: precision remote chronoelectric (dc) two-hand tachometers indicating simultaneously the speed of two engines, electronic horizons, tachometers, directors.


Prema (ing. Roundnický, Janáč a spol.)
Prague - Vršovice, Grégrova 669 (Brühlgasse 939)
Product code jlr
Company supplying precision aviation diaphragm instruments (barographs - recording instruments), tachometers, speedometers (with density compensation up to 6000 m and compressible correction), manometers, altimeters (two-hand), inclinometers (liquid relative longitudinal) centrifugal tachometers, single and double pressure gauges for blowers and photo sets for developing aerial films.


Vinopal Brothers, Aviation Instrument and Fine Mechanics Factory
Modřany near Prague
Product code: elo
The company, formerly KLEVIN (Klepš-Vinopal) supplying variometers, breathing apparatus, pneumatic artificial Horizons Sperry, compasses with a vertical rose, oxygen breathing apparatus, etc. In 1937, it employed over 700 workers.


A. Löschner, Fine Mechanics Factory (A. Löschner, Fabrik fein-mechanische Erzeugnisse)
Modřany near Prague
Product code eoo
Intermediate displays, aerial compasses and other devices manufactured under license by Deuta Werke, Berlin, Dr. Th. Thorn, Leipzig, Noris Tachometerwerk, Nuremberg, ElektroLux A. G. Berlin.


Edit: it seems that all the mentioned companies were included in PAL Modřany in the years 1946-1948, which was established by the nationalization of the Vinopal brothers' company. Prema was nationalized in June 1948 (www.epravo.cz), Kadlec probably did not exist for several years at that time.
I also found advertisements for the companies Vinopal and Prema in Aviation from 1937, but Kadlec is not mentioned.

Mr colleague,
there was a mention of the researcher Ladislav Šindelář, with whom I have known for many years from the Prague LHS and from the VHA study room. If interested, I am able to mediate contact.


P.S.
A while ago, I spoke to Mr. Šindelář, who can find a little information about the Kadlec company in his archive.
During its existence, the Kadlec company was based in several places in Prague. In 1946, a state administration was imposed on it, and in 1948 it was nationalized and later merged with Mikrotechna. The collection of Mikrotechna Holešovice, p. (1947-1994) contains over one hundred cartons and is stored in the Prague State Regional Archive.


Contact:
State Regional Archive
registered office: Archivní 4, 149 00 Prague 4
telephones, secretariat: 974 847 358, 974 847 269, research room: 974 847 269, fax: 974 847 357
e-mail: e-podatelna@soapraha.cz
http://www.soapraha.cz/