The SP22 has many features that are normally found on microscopes of a much greater price. The optical parts are made from achromatic corrected glass and are standard Royal Microscopical Society (RMS) size. The monocular head rotates trough 360° and has a wide field x10 good quality eyepiece.
The slide platform is a full mechanical stage with drop down coaxial controls that makes fine movement of the stage in the required direction very easy. The double vernier scale also allows position identification on the slide.
The focus system is also coaxial with the coarse and fine focus being ideally placed in a low position towards the back of the microscope body. The focus control moves the stage up and down to achieve focus. Beneath the stage is a fully focusable substage condenser with iris diaphragm that is used to focus the illuminating light in the plane of the specimen, with the iris helping to provide clarity of specimen detail.