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Grovers Optics & Photo. 216 High Street. Northallerton

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Grovers Toymaster 216 High Street, Northallerton DL78LW

A family business

List of products by manufacturer AstroMedia

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Showing 1 - 30 of 90 items
  • £ 49.95 Delivery In 1-5 Days* Tax included

    The classical high voltage generator - with limited current for safe experiments! For many people this machine is the most vivid memory of their physics classes at school. Everybody is fascinated by the crackling flashes of lightning that appear between the electrodes when the crank on the back is turned.

    £ 49.95 Tax included
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  • £ 11.95 Delivery In 1-5 Days* Tax included

    A very special photographic paper from the early days of photography. Just put objects or negatives on the paper and expose it to the sun light. The outlines of the objects will show up as a silhouette. Pack of 20 sheets, 140 x 190 mm

    £ 11.95 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 23.95 Delivery In 1-5 Days* Tax included

    Probably one of the best known scientific toys in the world, also known as “Happy Drinking Bird”. If you regularly fill his glass with new water, he will forever carry on sipping, seesawing back and forth. This toy had been banned in Europe for a long time because of its former harmful filling. But now Astromedia have found a version that has full EU...

    £ 23.95 Tax included
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  • £ 23.95 Delivery In 1-5 Days* Tax included

    The Crookes Radiometer, also known as a “light mill”, consists of a partly evacuated glass bulb, inside of which a set of vanes is suspended on a vertical axle. One side of the vanes is black, the other silver coloured. When exposed to bright light, the vanes start rotating about the axle. 

    £ 23.95 Tax included
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  • £ 16.95 Delivery In 1-5 Days* Tax included

    The Goethe Barometer consists of a partly filled glass sphere with stand that has a spout attached to its bottom. The spout is open at the top, which allows the atmospheric pressure to change the level of the liquid inside.

    £ 16.95 Tax included
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  • £ 34.95 Delivery In 1-5 Days* Tax included

    The principle of this thermometer was discovered by Galileo Galilei: Suspended in the liquid inside the cylinder are a number of weights which are attached to sealed glass bulbs.

    £ 34.95 Tax included
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  • £ 1.99 Delivery In 1-5 Days* Tax included

    Set of three files (each fine and medium), ideal to smooth and clean edges and burrs of our cardboard kits. Also suitable for wood and soft plastic.

    £ 1.99 Tax included
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  • £ 15.95 Delivery In 1-5 Days* Tax included

    If you hold the bottom glass bulb of the hand boiler in your hand, something astonishing happens: The blue fluid inside the bulb starts to rise through the spiral into the top bulb. When nearly all of the liquid is in the top bulb it also starts to bubble, as if it would be boiling

    £ 15.95 Tax included
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  • £ 3.95 Delivery In 1-5 Days* Tax included

    Wooden rail to mount our round telescopes on a normal photographic tripod. With special nut to fit most standard tripods. Size: 200 x 33 x 15 mm

    £ 3.95 Tax included
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  • £ 2.95 Delivery In 1-5 Days* Tax included

    Wooden rail to mount our telescopes with flat sides on a normal photographic tripod. With special nut to fit most standard tripods. Size: 250 x 25 x 7 mm

    £ 2.95 Tax included
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  • £ 12.95 Delivery In 1-5 Days* Tax included

    £ 12.95 Tax included
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  • £ 7.95 Delivery In 1-5 Days* Tax included

    £ 7.95 Tax included
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  • £ 4.95 Delivery In 1-5 Days* Tax included

    £ 4.95 Tax included
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  • £ 15.95 Delivery In 1-5 Days* Tax included

    A kit for a prism made from acrylic glass. Cast acrylic glass blank with all necessary polishing material to produce a highly transparent prism, instructions included - download below Size: 22 x 22 x 22 mm. Length: 55 mm Suitable for children.

    £ 15.95 Tax included
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  • £ 16.95 Delivery In 1-5 Days* Tax included

    £ 16.95 Tax included
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    Delivery In 1-5 Days*
  • £ 2.95 Delivery In 1-5 Days* Tax included

    £ 2.95 Tax included
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  • £ 9.95 Delivery In 1-5 Days* Tax included

    £ 9.95 Tax included
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  • £ 5.95 Delivery In 1-5 Days* Tax included

    £ 5.95 Tax included
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  • £ 9.95 Delivery In 1-5 Days* Tax included

    £ 9.95 Tax included
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  • From £ 6.45 Delivery In 1-5 Days* Tax included

    High quality single lenses and achromatic systems of two lenses. Ideal for experiments and self-made optical instruments. Diameters between 18 and 50 mm, a whole range of different focal lengths. All lenses are surplus from production lines of optical instruments. 531+532OMG and 550-569OAL Diameters: 18 to 50 mm Focal lengths: +26.5 to +250 mm

    From £ 6.45 Tax included
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  • From £ 3.50 Delivery In 1-5 Days* Tax included

    High quality lenses made from acrylic glass. The budget solution for all optical experiments. Diameters between 13 and 62 mm, a whole range of different focal lengths. C: convergent lens D: divergent lens

    From £ 3.50 Tax included
    1-5 Days UK Delivery*
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  • £ 14.95 Delivery In 1-5 Days* Tax included

    The main mirror used in our Newton Telescope: made by BAADER Planetarium from tempered float glass, with aluminium and quartz coating. An excellent mirror for DIY telescopes! Mirror diameter: 70 mm Thickness: 5 mm Focal length: 450 mm

    £ 14.95 Tax included
    1-5 Days UK Delivery*
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  • From £ 4.95 Delivery In 1-5 Days* Tax included

    A high quality flat mirror made from tempered float glass, with aluminium and quartz coating. No ghost images because the reflective surface is on the front of the mirror!

    From £ 4.95 Tax included
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  • From £ 5.95 Delivery In 1-5 Days* Tax included

    From £ 5.95 Tax included
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  • £ 6.95 Delivery In 1-5 Days* Tax included

    A fascinating gadget: wherever this black film is warmed up to 28°C it changes its colour to red. If the temperature rises above that, the colour changes to orange, yellow, green, blue, and purple. At 34°C it turns black again. 

    £ 6.95 Tax included
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  • £ 18.95 Delivery In 1-5 Days* Tax included

    A special egg timer: the sand doesn’t land on a uniform hill, but forms strange structures! In a normal egg timer the sand always forms a flat cone onto whose tip the sand falls from above. This sand in this egg timer does the same, until you stand it in its wooden stand.

    £ 18.95 Tax included
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  • £ 19.95 Delivery In 1-5 Days* Tax included

    A rainbow for indoors! This large crown glass prism projects beautiful spectral colours into your room. Hang the prism in a south-west or south-east facing window. When the low standing sun shines through the prism, it projects fields of spectral colours sideways into the room. A slight spin of the prism makes them dance around beautifully.

    £ 19.95 Tax included
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  • £ 4.95 Delivery In 1-5 Days* Tax included

    Set of 20 all-purpose permanent magnets made from a ceramic compound of iron oxide (ferrite). Ideal for homemade fridge magnets or for experiments with our iron filings (see above). Height: 4mm,  Diameter: 8mm

    £ 4.95 Tax included
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  • £ 29.95 Delivery In 1-5 Days* Tax included

    The Storm Glass Barometer came into general use during the early 1700s. Sailors attached this instrument to the mast of their ship and by interpretation of the constantly changing crystal formations within, relied upon it to forecast the weather for nearly 250 years.

    £ 29.95 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 11.95 Delivery In 1-5 Days* Tax included

    A very special photographic paper from the early days of photography. Just put objects or negatives on the paper and expose it to the sun light. The outlines of the objects will show up as a silhouette. Developing and fixation with tap water and without the need of a dark chamber. Made from non-poisonous & recycled paper. Pack of 10 sheets, 215 x 280...

    £ 11.95 Tax included
    1-5 Days UK Delivery*
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Showing 1 - 30 of 90 items