Skullbase.info is an independent online skull collection. High resolution (1600 pixels) images are available about all skulls and each can be checked in 360 degrees. All skulls have a datasheet with measurements. Furthermore the high resolution images are scaled in order to help making further measurements. https://skullbase.info/index.php
You’re making the dreams of all those soon-be-sofubi-maker tattooists come to life, Roger. nice find!