A method of preparing a acrylate functionalised polymer comprising the steps of mixing together a monofunctional vinylic monomer with from 0. The instrument also includes a four-bar handle assembly attached to the housing for actuating a drive rod assembly. The second side of the leadframe is partially cut away, so that an outer part of the die paddle is thinner, and so that an inner part of the leads is thinner. The first wire is disposed in the bonding area. In one embodiment, the virtual user module includes a pair of glasses having a three-dimensional display screen that can display live streamed views from the cameras.