Balancing Dovetail Bar - Camera Platform for Porta, Merlin, GIAZ, Autotrack

Camera Platform for Porta, Merlin, GIAZ, Autotrack and Other Mounts with Quick Release
Can also be combined with the optional L-BRACKET

An adapter plate of standard length (185mm) to allow the attachment of photographic equipment via a standard tripod bush (1/4-20 standard photo thread). The extra length helps to find correct balance of various optical or photographic equipment (e.g. spotting scopes, telephoto lenses etc) attached to the mount, that is otherwise impossible to achieve with the standard attachment. 

(Unique, low quantity product, hence the comparatively high price)

An extra long, 285mm version is also available separately:

Other adapters available for AZ3, EQ1, EQ2 and EQ3 mounts. See image below: