Monocular compound scope:scope for adults Ability to use optics to magnify tiny objects thousands of times to observe their structure for home school, teaching, demonstrations, clinical examinations, laboratories and advanced applications. Good Gifts : for adults It can be used to study the internal structure of living organisms or to analyze chemical substances, making it an excellent gift for friends, family, children and more. high magnification:compound scope 3 DIN achromatic objective lenses (4X, 10X, 40X) eyepieces and objective lenses can be combined to magnify 40x-2000X magnification.scope for kids Professional achromatic objective lens imaging clearer and richer chromatic aberration wider field of view, scope experiments observe the lens can be automatically retracted to protect the lens to prevent the sample and the lens overlap. materials: adult scope sturdy design, horseshoe-shaped metal base, adjustable scope observation angle, 45 ° angle is more in line with the human body observation angle, easy to install, energy saving and power saving, retrofitting fill light, so that the observation of the things to see more clearly, to give you a better use of experience! Coaxial and Fine : The professional scope adopts a coaxial optical system, which makes the observation clearer. It is also equipped with a fine ing mechanism, which makes it easy to adjust the object. This is suitable for a variety of biological, chemical and physical experiments.