[Ian Robinson]

Levelling .... ???

Suggest you make provision for leveling the adapter plate (3 x M15 threadbars and bolts).

You can't guarantee once you bolt the pier to the slab or concrete footings it'll stay put (vertical and leveled).

I had my Altux pier made for me by a local engineering firm (200mm NB steel thick walled pipe with 15mm thick base and top plates, no gussetting , and had a 40mm thick adapter plate mechined up from aluminium block , needed some mods.

Took two men to lift it out of the company's ute when they delivered it to me .... is HEAVY !!! which is good. The extra $30 was worth it .

Mine is a 1m length of pipe with 200mm tall threadbars (I'll shorten these) = leveling bolts bplted to the topplate (will eventually weld them on) and looks too tall for me once I attach the GEM and the 250mm newt , but I'm a shorty , and I designed it based on my desired ROR shed wall height to allow me to actually aim the polar alignment scope at the SCP and see a bit of sky lower down to 20o above my SW , S and SE horizons.