The base is constructed of mahogany. It is hinged at the back and is keyed in front. The box top is lined with green velvet. 16.5x11.5.6.4cm.
The main support pillar is bolted to the top of the box.
There are only two accessories: a bull's eye lens and stage forceps. Lens dia=21mm, f=45mm.
Both accessories are supported by an arm that places the device further from the stage.