Precision magnifier with 20X magnification. High-resolution detail even for minute details (professional quality). 3-lens system with a diameter of 18 mm. Achromatic and aplanatic lens. Fold-away. Chrome-plated case. Overall size: 20 x 20 x 32 mm ( 3 / 4 x 3 / 4 x 1 1 / 4 "). Leather etui.