If a person places 2 of these lenses a few inches away from each other in a tube, will it work like a monoscope?

A monoscope was a kind of tv pattern generator used to tune a tv system 30 years ago, so they don't. If you mean a telescope, you could place two of this lenses in a tube about 28 inch apart, with a magnification of about 2.5, so it just work as a demo, not a practical telescope.

are they labeled, like which one is concave and which one is convex?

They are not labeled, but the convex lenses are thicker in the center, with thinner edges. The concave lenses have thinner centers and thicker edges.

Could I use these to magnify the image from a cheap movie projector?

Has not been tested for that application, feel free to give it a shot though; if optical lenses do that, then these are optical lenses.

Would these work to make a simple refracting telescope??

In theory yes, but please be careful in reviewing focal length ratios to ensure that the tube length is reasonable.

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Eisco 6pc Optical Lens Set, 2" - 200mm, 300mm, 500mm Focal Lengths - 3 Double Convex & 3 Double Concave, 2" (50mm) Diameter Lenses - Optically True Glass - Ground, Beveled Edges - Labs

Product ID: 619528527

Details

Batteries required?
No
Brand
Eisco
Colour
Transparent
Item weight
0.3 Pounds
Lens material
Glass

🎯200-500mm focal length range

🔍50mm spherical lenses

🧪optically true polished glass

€ 55.37

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Description

🔬 Unlock the power of light with precision lenses that put you ahead of the curve!

ELEVATE YOUR PHYSICS CURRICULUM - Ideal for hands-on optics lessons, enabling millennials to lead the next wave of scientific discovery.
PRECISION OPTICS FOR SHARP INSIGHTS - Each lens is crafted with optically true glass and ground, beveled edges for flawless light refraction.
VERSATILE FOCAL LENGTHS TO MASTER LIGHT - Includes 3 double convex and 3 double concave lenses spanning 200mm, 300mm, and 500mm focal lengths for diverse experiments.
COMPACT 2 INCH DIAMETER FOR EASY HANDLING - Standard 50mm diameter lenses fit perfectly in any lab setup or classroom demonstration.
ENGINEERED FOR PROFESSIONAL LEARNING ENVIRONMENTS - Designed and manufactured under strict quality controls to endure rigorous academic and lab use.

The Eisco 6pc Optical Lens Set features six 2-inch diameter spherical lenses—3 double convex and 3 double concave—covering focal lengths from 200mm to 500mm. Made from high-quality, optically true glass with polished, ground edges, this set is engineered for durability and precision, perfect for advanced physics classrooms and laboratory demonstrations in optics and light refraction.

Specifications

ASIN	B00BIKGMZ8
Are Batteries Required	No
Best Sellers Rank	#194,315 in Office Products ( See Top 100 in Office Products ) #110 in School Curriculum Resources
Brand Name	Eisco
Color	Transparent
Customer Reviews	4.4 4.4 out of 5 stars (254)
Global Trade Identification Number	00849230033934
Item Weight	0.3 Pounds
Lens Material	Glass
Manufacturer	Eisco
Manufacturer Part Number	FSC1018
Model Number	FSC1018
Number of Items	1
UPC	849230033934 789164198838 885629689177
Unit Count	6 Count

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€ 55.37

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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