WERN INTER AB
STOCKHOLM, SWEDEN.
MECHANICAL HVAC CONSULTING ENGINEERING. DESIGN & INSPECTION: Water, Cooling, Piping, Heating, Ventilation, Air Conditioning, Automatic Control. Slide Rule Engineering Design
Decimal Point Slide Rule Calculator IWA1633 & 1638.
P-Phone Control AB
PeriProx Control Solutions.
WERN INTER AB
WERN INTER AB started 1963 in Sweden as the HVAC consulting engineering company,
Wern Inter VVS AB. It was founded by Carl R. Wern, a Registered Professional Mechanical Engineer in the state of Michigan, USA. Carl´s brother George joined in 1964 the company.
Its present name Wern Inter AB was registered 1984.
HVAC project design for Swedish and Foreign buildings.
Heating, Ventilation, Air Conditioning including, Plumbing, Cooling, Piping and Controls
for Swedish and Embassy buildings in Europe, Africa, Asia and North America.
Slide rule and calculator design
- Slide rule design awarded with gold medal to the Wern brothers
- Slide rule calculator design and production for various clients
Patents
- Touch control for lighting installations patented in 1972
- Patent licence for picture telephony on an ordinary subscriber line, sold 1976 to Ericsson.
Wern Inter AB. Consulting Engineering service was closed down year 2000.
P-Phone Control AB
The company (PPC) was founded 1992 by Carl together with his brother George in a joint
venture agreement with their brother Lars who is a registered European Patent Attorney.
The Wern brothers proximity sensor was first used in lighting installations for touch control and
thereafter in art museums as invisible shields preventing exhibited objects from being touched.
Today called PeriProx, the technology has been shown applicable for providing enhanced security
in 2000 to a Saab car and in 2009 to a Scania truck. Its usefulness for precise proximity sensing was shown in 2010 by Ericsson´s Connected Tree at Barcelona, Hannover and LasVegas international fairs followed by a permanent exhibition at Ericsson Studio in Kista and by a PeriProx patent in 2012 on a monitoring system for prevention against natural as well as man-made disasters.
Read more about PPC offer and historic in www.periprox.com.
MECHANICAL HVAC ENGINEERING DESIGN PROJECTS 1963-2000.
DOMESTIC PROJECTS - INRIKES PROJEKT
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1961-1963.Åhléns City 1968.Hultsfred Centrum 1976.Statens Vattenfallsverk 1979.Vadstena Slott
1974.Kockums, Malmö 1979.BRF Östberga 1983.Riksgäldskontoret 1988 Eurostop,BP
FOREIGN HVAC PROJECTS - UTRIKES PROJEKT.
1979.Beijing, China 1989.Maputo, Mocambique 1990.Tallin, Estland 1991.EU, Brussel
Slide Rule Design
System Wern Slide Rule IWA 1633 & 1638.
Gold medal award at the International Exhibition in Brussels 1966.
Slide Rule Reference
National Museum of American History: System Wern ABC Circular Slide Rule.
http://americanhistory.si.edu/collections/object-groups/slide-rules
https://americanhistory.si.edu/collections/search/object/nmah_1811360
www.sliderulemuseum.com International Slide Rule Musum, Denver Colorado, USA.
https://en.wikipedia.org/wiki/Slide_rule
http://rechnerlexikon.de/artikel/IWA_1638_ABC-Rechner
IWA 1638
Note: IWA1638. Pat.Pend. has a black washer in the slide rule center with Manual 1 and Manual 2/Except Example #28 & #29.
IWA1638. Patended has a red washer in the slide rule center with Manual 2.
1966. IWA1633 IWA1638 DYNAMIC ART IWA 1638
Slide rules manufactured by IWA Rechenshieberfabrik, W. Germany.
Special calculators
Design layout made by WERN INTER AB for some of our Clients.
IWA07133. Air Duct Calculator SI75. Conversion Factors kv81. Valve Factor
1972. Metric System. 170x240 mm 1975. Technical system. 90x120 mm 1981.Water, Steam & Air. 90 x 120 mm
Manufactured by IWA, W. Germany. Manufactured by INPLASTOR, Sweden. Manufactured by INPLASTOR, Sweden.
1960. Draftsman triangle 1967.SI-GUIDE 1970.EconomicOrderSize 1973. NavigationRuler
Calculators
Water - Heating - Ventilation. Prototypes to be shown later.
MECHANICAL ENGINEERING Tables and Diagram
Air Duct friction Air Humidity Conversion Units IWA1638
MECHANICAL ENGINEERING REFERENCE
ASHRAE SOCIETY Energi-miljo-SwedishTidskrift HVAC VVS - Swedish Museum in Sweden
CRW Background
1945. Hermods Correspondence Institute, Malmö: Mathematics, Building Design Construction, etc.
1949. Stockholm Technical Institute, Sweden: Swedish HVAC Engineering Degree.
1960. Registered Professional Engineer in Michigan, USA.
1963. HVAC Technical Association in Sweden - Membership.
1983. Registered Professional Engineer in Minnesota, USA.
1994. Swedish Institute for Technical Approval in Construction: Function Control/Ventilation.
Three 2000-year-old unsolved geometric problems.
Angle Trisection, Squaring the circle and Doubling the cube.
Carl R. Wern presents now solutions for these three geometric problems as perfect as it can be done with given rules.
Tre 2000-åriga och olösta geometriska problem.
Vinkelns tredelning, Cirkelns kvadratur och Kubens fördubbling.
Carl R. Wern presenterar nu lösningar för dessa tre geometriska problem så perfekt som det kan bli gjort med givna regler.
TRISECTION, TREDELNING
www.allinone.nu
Sweden May10, 2025
Carl R. Wern
Copyright 2021. Carl R. Wern
