PM-ERGO-CONTROL armrests with multi-range adjustment - designed for GRAMMER seats. This option is most useful in machines equipped with electrohydraulic or electronic joysticks mounted in the armrests. Special FAO FAR ERGO-CONTROL armrests have been designed specifically to ensure the utmost operator comfort. It is possible to purchase two or one armrest in the case of tractors equipped with an advanced right armrest, such as the command arm or similar.