Geo-Measure’s Mini Prism Set is the key to increasing your accuracy when compared to traditional, larger prisms. With the smaller target, discrepancies in measurements are virtually eliminated. Our Geo-Measure mini prism sets include a prism assembly and four screw-on aluminum rods. A 1.2 m long aluminium prism pole is also included in an aluminium container, an all-metal tilting assembly. To compliment the prism, included within the case is a 5/8″ tribrach adapter and plumb-bob hook.