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HE1008668HE1008668
Double Convex Spherical Lenses: +5D FL:200mm - Pack of 5 Pack of 1 Spherical Lenses: Double ConvexWith optically worked faces and ground edges, for educational purposes.Diameter: 50mmFocal Length: 200mmPower: +5DRefractive index: 1.52.Material: Float GlassPack of 5
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HE1008669HE1008669
Double Convex Spherical Lenses: +3.3D - Pack of 5 Pack of 1 Spherical Lenses: Double ConvexWith optically worked faces and ground edges, for educational purposes.Diameter: 50mmFocal Length: 300mmPower: +3.3DRefractive index: 1.52 approx.Material: Float GlassPack of 5
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HE1008670HE1008670
Double Convex Spherical Lenses: +2D FL:500mm - Pack of 5 Pack of 1 Spherical Lenses: Double ConvexWith optically worked faces and ground edges, for educational purposes.Diameter: 50mmFocal Length: 500mmPower: +2DRefractive index: 1.52 approx.Material: Float GlassPack of 5
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HE1008671HE1008671
Double Concave Spherical Lenses: -20D - Pack of 5 Pack of 1 Spherical Lenses: Double ConcaveWith optically worked faces and ground edges, for educational purposes.Diameter: 50mmFocal length: 50mmPower: -20DRefractive Index: 1.52 approx.Material: Float GlassPack of 5
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HE1008672HE1008672
Double Concave Spherical Lenses: -10D - Pack of 5 Pack of 1 Spherical Lenses: Double ConcaveWith optically worked faces and ground edges, for educational purposes.Diameter: 50mmFocal Length: 100mmPower: -10DRefractive Index: 1.52 approx.Material: Float GlassPack of 5
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HE1008674HE1008674
Double Concave Spherical Lenses: -5D FL:200mm - Pack of 5 Pack of 1 Spherical Lenses: Double ConcaveWith optically worked faces and ground edges, for educational purposes.Diameter: 50mmFocal Length: 200mmPower: -5DRefractive index: 1.52 approx.Material: Float GlassPack of 5
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HE1008675HE1008675
Lenses: Plano-Convex +7D FL:140mm - Pack of 5 Pack of 1 Plano-Convex Lenses made from clear glass with ground edges & optically worked faces, for educational purposes.Diameter: 50mmFocal Length: 140mmPower: +7DRefractive Index: 1.52 approx.Material: Float GlassPack of 5
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HE1008676HE1008676
Lenses: Plano-Cylindrical +7D - Pack of 5 Pack of 1 Plano-Cylindrical Lenses made from clear glass with ground ends and optically worked faces, for educational purposes.Dimensions: 50mm x 50mm.Power: +7DMaterial: Float GlassPack of 5Plano-Cylindrical Lenses: 50mm, +10 Pack of 5 also available (B8L27303).
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HE1008677HE1008677
Lenses: Plano-Cylindrical +10 - Pack of 5 Pack of 1 Plano-Cylindrical Lenses made from clear glass with ground ends and optically worked faces, for educational purposes.Dimensions: 50mm x 50mm.Power: +10DMaterial: Float GlassPack of 5Plano-Cylindrical Lenses: +7D - Pack of 5 also available (B8L27297).
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HE1008684HE1008684
AZLON Measuring Cylinder - Squat Form - 1000ml Pack of 1 Squat design for increased stability, ease of handling and space saving storage. Unique, self-draining base eliminates water collection during washing in a dishwasher. Moulded, blue easy-to-read graduations. High clarity polypropylene - safe, unbreakable, with good chemical and temperature resistanc...
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HE1008686HE1008686
AZLON Measuring Cylinder - Squat Form - 500ml Pack of 1 Squat design for increased stability, ease of handling and space saving storage. Unique, self-draining base eliminates water collection during washing in a dishwasher. Moulded, blue easy-to-read graduations. High clarity polypropylene - safe, unbreakable, with good chemical and temperature resistanc...
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HE1008687HE1008687
AZLON Measuring Cylinder - Squat Form - 250ml Pack of 1 Squat design for increased stability, ease of handling and space saving storage. Unique, self-draining base eliminates water collection during washing in a dishwasher. Moulded, blue easy-to-read graduations. High clarity polypropylene - safe, unbreakable, with good chemical and temperature resistanc...
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HE1008691HE1008691
4X Magnifier - 38mm Pack of 1 Handheld magnifier consisting of high quality glass lens with moulded plastic handle.Lens diameter: 38mmMagnification: 4X
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HE1008692HE1008692
3.5X Magnifier - 50mm Pack of 1 Handheld magnifier consisting of high quality glass lens with moulded plastic handle.Lens diameter: 50mmMagnification: 3.5X
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HE1008693HE1008693
2.25X Magnifier - 75mm Pack of 1 Hand held magnifier consisting of high quality glass lens with moulded plastic handle.Lens diameter: 75mmMagnification: 2.25X
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HE1008694HE1008694
2.25X Magnifier - 90mm Pack of 1 Hand held magnifier consisting of high quality glass lens with moulded plastic handle.Lens Diameter: 90mmMagnification: 2.25X
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HE1008699HE1008699
Clifton Spirometer Pack of 1 The Clifton Spirometer is a wedge-type spirometer suitable for simple experiments on investigating tidal volumes and breathing rate, or for more advanced use in measuring respiratory rate, pulmonary ventilation, reserve volumes and vital capacity. Oxygen consumption can also be measured.The tank is...
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HE1008701HE1008701
Philip Harris Decade Resistance Unit Pack of 1 For use as an accurate potential divider, ratio arm etc. This unit employs high stability metal film resistance elements having superior characteristics to traditional wire wound coils. It is equally suitable for a.c. or d.c. use. The individual decades are series connected, each having switched pos...
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HE1008702HE1008702
Hero’s Engine (Eolipile) Pack of 1 Comprising a borosilicate glass bulb 70mm diameter, with side arms bent at right angles and formed into jets at their tips. The bulb is carried upon a metal stand which leaves it free to rotate about its horizontal axis. If about 25cm³ of water is introduced into the bulb and boiled the issuing stea...
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HE1008705HE1008705
Economy Clamp - Four Prong - Pack Of 5 Pack of 1 Economy clamps with four prongs made from a diecast aluminium alloy.Not suitable for applications requiring strong or direct heat.Holds objects of diameter 6 to 95mm.Cork linedPack of 5
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