Parts List Links
Ferrule that fits a survey prism pole. Tube - Ferrule - 0.875 X 1.115 X 6.5 IN
https://www.rockwestcomposites.com/46603-f6-5
5/8” threaded ball options (need 2)
Softer ball
https://www.amazon.com/your-orders/pop/ ... =DBTVBCG87
A bit harder poly ball-currently on for sale lurks
https://www.grainger.com/product/INNOVA ... derHistory
Snap button
https://www.grainger.com/product/GRAING ... derHistory
Prism survey poles (need 2)
They are used with prism for a total station in construction layout and surveyors. Any surveyor friends or concrete contractors may have old ones laying around, newer ones are usually carbon fiber. Requires two of these poles. These are key since they already come with a 5/8”-11 threaded end.
Example: The above lurk is not this product below, an example I found with a quick search.