I compared it to a Trimble 360 prism I have and it costs $$$. The body of the prism is made of hard plastic while the Trimble is made of hard rubber. Did a remote test and got identical results. The height adapter is 0.02 feet smaller than the Trimble. I drilled some washers (5/8" hole) to make up the difference. Only time will tell if it will hold up to the heat and cold of everyday use.
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