A high quality instrument of robust, reliable metal construction and excellent optical performance. Highly recommended for Primary Science Education and Field Study Centres (officially approved by the Royal Microscopical Society for use in primary schools). Extremely simple to use, the PM-1 is ideal for the examination of everyday objects in fascinating yet understandable detail. The anti-tamper student proof design includes locked-on eyepiece & stage clips and a slip clutch on the focus movement. Also an extremely useful routine inspection microscope for use in industrial applications.