This is a multiplex C of G gauge, dont guess the balance point of your model again or try and get it balanced on your fingertips use this simple accurate gauge and get it right every time. The plan or building instructions usually state the CG position and with this gauge it can easily be transferred accurately to the model. This gauge can co cope with models with an all-up weight of 300 g to 10 kg. The measurement range extends from 30 to 150 mm, which means that it can handle a (non-swept) wing with
a chord of up to about 450 mm in the case of a constant-chord wing; that’s likely to cope with any current model.