1pcs Double Concave Lens | 50mm Diameter and 75mm Focal Length Tongs & Holders ✅Measure from -30 Degrees Celsius

✅Measure from -30 Degrees Celsius to 120 Degrees Celsius and from -22 Degrees Fahrenheit to 240 Degrees Fahrenheit

Eco-friendly PP raw material as out shell

flexibility

Object distance is equal to image distance

Improved accuracy and robustness and is less expensive than traditional potentiometers

1pcs Double Concave Lens | 50mm Diameter and 75mm Focal Length Tongs & Holders ✅Measure from -30 Degrees CelsiusHigh 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. 75mm Focal: Featuring a 75mm focal, this lens is an ideal tool for creating focused images and light beams.