Jay Instruments and Systems Pvt. Ltd. Manufactures Weight Indicator with Waterproof 16-key Functional Keypad. Jay Instruments and Systems Pvt. Ltd. Is an ISO 9001:2000 certified company. Weight Indicator with Waterproof 16-key Functional Keypad or DFW "ATEX3GD": WEIGHT INDICATOR FOR ATEX 2 & 22 ZONES has LCD display with 6 25-mm high contrast digits and with indication of active functions. It is suitable for use on the table, or wall. The Weight Indicator with Waterproof 16-key Functional Keypad is available with a dimension of 265x140x175 mm. It has 4 channels [for single weighing system].