Topcon 51910 Single Prism Holder
$61.99
High impact plastic fixed prism holder for Topcon 51803 single prism (sold separately)
Prism can be mounted on one side for zero offset or in the recessed side for -30mm offset.
Has a 5/8 x 11 female thread in its base for mounting to a prism pole.
Top has a 5/8 x 11 male thread for a candy cane like the Topcon 51828 (sold separately)