Kyowa Interface Japan has been manufacturing Contact Angle meters since 1960. These instruments are used in the Contact Angle measurement, Surface Free Energy analysis and Surface/Interfacial Tension measurement.
The Contact Angle meter also goes by the name Goniometer
DropMaster (DMs) series Contact Angle meters has a range of systems starting from DMs-200 which is the basic of the models to the most sophisticated DM-701.
The model DMs-200 model is a basic model used to determine the Contact Angle under the Sessile drop method in the Static mode.

Kyowa Interface Japan started manufacturing Surface Tensiometer since 1957.
The DyneMaster Tensiometer series starts with model DY-300 and he most sophisticated model would be DY-700. 
Measurement technique used in Kyowa Tensiometer are Wilhelmy plate method ,du Noüy ring method, Pendant drop method and Maximum bubble pressure method
Instrument is widely used in Paint industry, ink, Rubber , Pharma ,Ceramic, Nano & polymer and Research institutes etc
The same instrument is also used for the measurement of IFT - INTERFACIAL TENSION. This is mostly used in the study of quality of Transformer Oil.
When IFT is measured the system is delivered with DuNuoy ring and a bigger sample receptacle with graduation