S. C. Dey & Co. Offers Digital Tensiometer. S. C. Dey & Co. Manufactures testing instrument for Material & Petroleum Testing. The Digital Tensiometer is made following IS, BS, ASTM, DIN and ISO standards. It is available in Horizontal and Table Top types. It has a 4.5 digit display for Load Indication and 4 digit display for Strain Indication.