Crossing Threads Prepared Microscope Slide for Introductory Microscopy

This Eisco Labs prepared microscope slide features three crossing threads, providing a simple tool for introductory microscopy lessons. The three-thread arrangement at different focal depths allows students to learn fine focus and depth of field techniques. The slide measures 75mm (3 inches) wide by 25mm (1 inch) long by 0.06 inches thick and arrives in a protective cardboard casing. Ideal for elementary and middle school biology classrooms teaching microscope operation, focusing techniques, and basic specimen examination.