Demonstrates six different cervical conditions prior to birth. Each pelvic block is clearly identified on the bottom to indicate which condition exists internally. 

Features:
 Observe the cervical conditions prior to birth with a vaginal speculum:
• no dilatation, no effacement;
• 2 cm dilatation, 50% effacement;
• 2 cm dilatation, full effacement;
• 5 cm dilatation, full effacement;
• 7 cm dilatation, full effacement;
• 9 cm dilatation, full effacement.