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This is a semi-scale Bell 407 style head. This version is modelled after the 407GXP switch panel, as it has more buttons on it than others. From what I've seen, there are a lot of variants of this head with different buttons on it. Proportions should be accurate, with some minimal deviation needed to adapt the head to the existing simchair MKIV collective lever body with a physical latch.
simchair4_models\printable components\peripherals\helicopter\collective lever\c_switch panels\b407 collective head