Products

Optical Design Newtonian Reflector Aperture (mm) 127 mm (5 in) Focal Length (mm) 1000 mm (39 in) Focal Ratio 7.87 Eyepiece 1 (mm) 20 mm ...

Type: RefractorDiameter: 80mmFocal: 400mmFocal ratio: f/5Accessories:Erect image diagonalEyepieces: 4mm, 20mmBarlow 3X5X24 finderscope

Lens papers is essential for cleaning optical surfaces of microscopes including lens, coverslips and slides to prevent scratches. Also ideal for de...

Diameter: 45 cmMinimum length: 90 cmMaximum length: 180 cmNOT AVAILABLE FOR SHIPPING

Magnification: 8  x Objective Diameter:   42mm Angular Field of View (Real):   6.8° Angular Field of View (Apparent):   50.8° FOV at ...

Magnification: 8x Diameter: 42mm Field of view: 7,2 deg Exit pupil: 5.25mm Eye relief: 20.2mm close focus: 3m weight: 575g Waterproof: yes

Binocular 360º rotating inclined at 45º Interpupillary adjustment of 54mm to 76mm Diopter adjustment of +/- 6 on both ocular tubes Paired 10X wide...

This product will work with our Vantage Pro and Vantage Pro2 wireless weather stations, however, the heater must be plugged into an electrical outl...

For use with net with wooden handel (ENT001).

Découvrir et explorer dans tous leurs détails plus de 700 échantillons de roches et de minéraux. De magnifiques pleines pages consacrées aux 270 ro...

Depuis le lit des cours d'eau jusqu'aux plages, des parois de falaises jusqu'aux champs, découvre les roches, les minéraux et les pierres les plus ...

This detailed and easy-to-use guide contains striking photography of rocks and minerals from around the globe, and is designed to help readers and ...

Many of us are fascinated by rocks―but identifying them can seem daunting. It’s often tricky even for geologists, who rely on experience, intuition...

Un modèle futuriste de rover de transport de la NASA pour partir à l'exploration de Mars. Un modèle motorisé doté d’un mini rover d’exploration. À...