Caslick Speculum.

Caslick Speculum.
After washing the mare the Caslick vaginal speculum is ready for insertion. Prior to insertion the split dorsal blades and wider ventral blade are rotated a quarter of a turn. After insertion the blades are rotated back 90 degrees. The divided upper blades can opened up laterally by turning the large wing nut.

Asbury AC (1986)