Double Concave Lens Even Edges and Thickness - Ideal for Spinning Top - 75 mm Dia 20 cm FL

Photography Prism with Cleaning Pouch - 150mm/6in Best Crystal Glass Triangular Prism for Photos and Teaching Light Spectrum - Portable 6 Inch Optical Rainbow Prism

Concave Mirror - 3" Dia, 200mm Focal Length - 3mm Thick - Glass - Eisco Labs

Rainbow Symphony Color Filters - Color Filter Set Consists of six 8" X 10" Sheets - Includes Bonus Sheet of 13,500 Line/Inch Diffraction Grating

Ajax Scientific Acrylic Isosceles Prism, 68mm Length x 95mm Height x 20mm Thick

Sciencent Set of 3 Acrylic Prisms 1" 2" 4"

Eisco Labs Equilateral Acrylic Prisms With 1 inch Sides, Set of 3 Prisms - 1 Inch, 2 Inch, and 4 Inch Lengths

UCanSee 104 Trial Lens Set Metal Rim Aluminum Case Free Trial Frame

Eisco Labs Light Box - 27 Piece Optical Kit, Covering 18 Topics in Optics with Full Activity Guide

Abraham Iridectomy Yag Laser Lens

Crook's Radiometer, 2.75" (70mm) Diameter, Mounted on a Sturdy Plastic Base - Eisco Labs

Focusable 650nm 5mW 3-5V Red Laser "Line" Module Diode w/ driver Plastic Lens (2 Pack)

6PK Equilateral Prisms 3pc Set - 1", 2", 4" Lengths, 25mm Face Size - Acrylic - Classroom Pack (Six, 3pc Sets - 18 Pieces Total) - Eisco Labs

Amlong Crystal Premium Optical Glass Double Convex and Concave Lens Set, 75mm Diameter, 20cm Focal Length, 2 Pieces Set

Rainbow Symphony Diffraction Grating - Rainbow Peepholes, Package of 25

Portable Vet/Veterinary B-Ultrasound Scanner with 3.5Mhz Convex Probe for Horse,Goat,Cow,Sheep and Pig use

Optical Glass Lens and Prism Set 7 Piece

Rainbow Symphony Diffraction Grating - Rainbow Peepholes, Package of 50

Round Convex Glass Mirror - 4" (100mm) Diameter - 100mm Focal Length - 2.5mm Thick Approx. - Eisco Labs

Selens Photography Triangular Prism and Prism Lens Ball with Female 1/4 Inch for Photos, Rainbow Prism Crystal Glass Effects Filters for Weding, Portrait, Landscape Photo Studio Shooting

Sumnacon Photography Prism Crystal Glass Triangular Prism Full Rainbow Color Spectrum Best for Photography (6")

UKCOCO 3 Pack Optical Glass, RGB Dispersion Prism Cube, Perfect for Teaching Light Spectrum Physics (Varied Size)

Amlong Crystal K9 Optical Glass Prism Cube, 60mm (2.3 Inch)

Samber LED Lens Plano-Convex Glass Lens Optical Glass Flat  LED Convex Lens Convex Glass Lenses Condenser Lens Optical Lens Focusing  for LED Spotlights Car Lights Flashlights Projection Lamps/30mm

5pcs Laser Line Module Plastic Lens w/Five Different Degrees 30/45/60/90/120

Ajax Scientific Acrylic Right Angle Prism, 50mm Length x 34mm Thick

United Scientific MCVSET Glass Mirror Set, 6 Pieces

American Educational 6 Piece Glass Lens Set

Eisco Labs Glass Semicircular Block, 3 1/2"x11/16" (90x18mm)

IFOLAINA Prism 6" inch Light Optical Glass Crystal Triangular Prism for Science Physics Teaching Photo Photography Crystal Equilateral Fractal Spectrum Prism

Eisco Labs Economy Spectroscope Tube, Pack of 6

The Eclipser Safe Solar Eclipse Glasses CE Certified - 5 Pack White

Amlong Crystal 6 inch Optical Glass Triangular Prism for Teaching Light Spectrum Physics and Photo Photography Prism, 150mm

Double Concave Lens Even Edges and Thickness - Ideal for Spinning Top - 75 mm Dia 20 cm FL

Amlong Crystal 4 inch Optical Glass Equilateral Prism for Teaching Light Spectrum Physics and Photo Photography Prism, 100mm

Amlong Crystal Premium Optical Glass Double Convex and Concave Lens Set, 50mm Diameter, 3 Double Convex (20, 30, 50cm FL) and 3 Double Concave (20, 30, 50cm FL), 6 Piece Set

5pcs 11mm Filter Lens Against 400-750nm/pass 808-1064nm IR Laser

Red Secret Decoder Glasses (10)

2cm Optical Glass X-Cube Prism RGB Dispersion Prism for Physics and Decoration Same Size 3pcs

Photography Prism with Cleaning Pouch - 150mm/6in Best Crystal Glass Triangular Prism for Photos and Teaching Light Spectrum - Portable 6 Inch Optical Rainbow Prism