Anal position (perineum to anal position) Perineum position (intermediate route from perineum to anus) I need accurate measurements of these four locations. If you have any other requirements, please let me know. (Note: the size of the goods due to measurement methods, measuring instruments, factory duction batches of different and so there will be a small error, generally ± 2 mm error is normal, does not belong to the quality issues or size description does not match, thank you).