This part of ISO 10907 specifies the basic dimensions and tolerances, in millimetres, of locating rings for mounting of moulds (see Figure 1) without thermal insulating sheets, suitable for injection moulding machines up to size E12, (according to EUROMAP 2), type A (with bore) and type B (without bore). It also gives material guidelines and hardness requirements, and specifies the designation of locating rings that are in accordance with its specifications.