Implements of Labour, the most important part of the means of production, with the help of which objects of labour are directly acted upon. In this category are: machines, equipment, instruments, engines, regulating devices. The significance of implements of labour like automatic machine complexes with automatically controlled and regulated production process, computers, machines with digital programmed control and other up-to-date machines and mechanisms, is growing during the contemporary scientific and 158 technological revolution. Characterising the determining role of implements of labour, Marx said: "... we may call [them] the bone and muscles of production" (K. Marx, Capital, Vol. I, p. 176). Political economy studies the socio-economic form of the implements of labour, which is determined above all by the ownership of the means of production. Under capitalism, the implements of labour, being privately owned, serve as the means of exploiting wage labour in order to extract profits (see Profit, Capitalist). Implements of labour in the communist mode of production are used by society in a planned way to steadily develop production and make it more effective in order to more fully satisfy the requirements of the working people.