A basic 16mm diameter plotting compass marked with the principal compass points. The compasses provide a simple, visible method of demonstrating and mapping magnetic fields in a classroom environment. * Glass face * Aluminium case * Diameter: 16mm * Sold singly * Eisco type PH0820A https://elecena.pl/product/27244222/eisco-basic-plotting-compass-16mm 2024-11-12 https://elecena.pl/product/27244222/eisco-basic-plotting-compass-16mm 2025-08-11