1pcs Double Concave Lens | 50mm Diameter and 200mm Focal Length Face Mask Separated into 4 parts and

Separated into 4 parts and 25 positions are displayed

Included: Large Floating Ring Magnets Apparatus Experiment Kit

Specification:

20" x 26" heavy paper laminated with grommets

1pcs Double Concave Lens | 50mm Diameter and 200mm Focal Length Face Mask Separated into 4 parts andHigh Quality Glass: Made from durable and high quality glass, this Double Concave Lens is designed to last and provide accurate and reliable results in a variety of scientific applications. 50mm Diameter: With a diameter of 50mm, this lens is perfect for use in a range of optical experiments, including refraction, reflection, and more. 200mm Focal: Featuring a 200mm focal, this lens is an ideal tool for creating focused images and light beams.