Standard Tar Viscometer used for determining the viscosity of cut back bitumen and road-oil. The viscometer consists of a chrome plated copper bath, with a drain valve and a central tube to receive the test cup and to position the stirrer, and is mounted on a stand with leveling feet. Stirrer has a curved shield and is provided with an insulated handle, thermometer socket and swivel support for the valve. Standard Tar Viscometer are supplied complete with 10 mm cup and ball valve or 4mm cup and ball valve as per the requirement and Electrical Heater with immersion heating elements and Dimmerstat for controlling the temperature. Suitable for Operation on 220V, Single Phase, 50Hz, AC Supply.