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Building an 8" pier for smaller telescopes
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Products & Solutions for ...
12" Concrete Piers
GEM Mounts
12" Pier Top Plate Combo for GEM Mounts
Installation Diagram
    * Requires Losmandy MA adapter
  ** Requires AP ADATRI Tripod Adapter
*** Requires AP 900FSA or 119FSA Flat Surface Adapter
This kit combines our standard 12" pier top plate with our 8" adapter for GEM (German Equatorial) mounts. The GEM adapter mounts to the 12" plate with shoulder bolts from underneath. The GEM  adapter supports multiple mounts (see compatibility list below). The 8" GEM Adapter kit may also be purchased separately.

This combination may also be purchased with our 3/4" stainless steel anchor bolt kit.
Related Products
3/4" x 12" L-Style Stainless Steel Anchor Bolt Kit
12" Pier Top Plate Combo for Large GEM Mounts
8" Pier Top Plate Combo for GEM Mounts
Additional Images
  ) Losmandy GM-8/G-11 Mounts *
  ) Astro-Physics Mach-1 Mount **
  ) Astro-Physics AP-900/1100 Mount ***
  ) Takahashi NJP Mount
  ) 12" Diameter 1-1/2" Thick Pier Top Plate
  ) Unthreaded Center Insert
  ) 8" Diameter AP-GEM Adapter
  ) Stainless Steel Shoulder Bolts
  ) Stainless Steel Center Bolt
International and Custom Orders
Send eMail for shipping charges outside the USA
Ordering Information Amount USA Shipping Lead Time
12" Pier Top Plate + 8" AP-GEM Adapter $478.00 $39.00 15 Weeks
12" Pier Top Plate + 8" AP-GEM Adapter +
3/4" Anchor Bolt Kit

$551.00 $56.00 15 Weeks
8" AP-GEM Adapter Kit $123.00 $17.00 15 Weeks