?? ?? ???? ????? ?? ????? ??????? ?? {??????????????? ?? ?? ?? ??? ?? ?? ?????? ?????? ?? ?? ??????? ????? ?? ??? ?? ????? ???? ?? ???? ??? CHAIR FOR REPAIRING ????? ????? ???? AN ESSENTIAL TOOL ???? ?? ??? ?? WORKS IN REPAIRS . ????? ????? ????? ????? ???? A CHAIR WITH ADJUSTABLE HEIGHT? ?? ???