里氏硬度计异型支撑环序号代号型号异型支承环简图备注1EH-7Z10-15测外圆柱面R10～R152EH-8Z14.5-30测外圆柱面R14.5～R303EH-9Z25-50测外圆柱面R25～R504EH-10HZ11-13测内圆柱面R11～R135EH-11HZ12.5-17测内圆柱面R12.5～R176EH-12HZ16.5-30测内圆柱面R16.5～R307EH-13K10-15测外球面SR10～SR158EH-14K14.5-30测外球面SR14.5～SR309EH-15HK11-13测内球面SR11～SR1310EH-16HK12.5-17测内球面SR12.5～SR1711EH-17HK16.5-30测内球面SR16.5～SR3012EH-18UN测外圆柱面，半径可调R10～∞)