Compound Chest Microscope and Accessories, by Nairne, London, c. 1750-75

Cuff's Model Microscope, the copper alloy body tube has an eyepiece with a blackened eyecup and a sliding dust cover. The lower, narrow section of the body has an external thread to take objectives. The body is supported by a ring on an arm attached to the top of the square cross sectioned pillar. The cruciform stage has a recessed stage hole, two pinholes and a keyhole slot for accessories. The stage is mounted on a sliding sleeve and can be raised or lowered for focusing by a vertical screw on the side of the pillar. A pivoting arm holds the mount for the mirror. The pillar is mounted on a cradle joint on the inside the case and folds flat when not in use. The case is mahogany and lined with green velvet. The accessories present are four objectives, a fishplate, a Lieberkühn in a can, a Lieberkühn carrier, an ivory talc box, a cone diaphragm, stage forceps, hand forceps, a spring stage and a live box. Plus a description of the microscope and list of complete accessories.