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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

Educational There are 87 products.

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Showing 1 - 30 of 87 items
  • £ 15.95 Out of stock 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

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  • From £ 44.95 Delivery In 1-5 Days* Tax included

    Alan Davies and Phill Jupitus try out upside down goggles - QI Series N Episode 8: Preview - BBC Two These amazing Reversing Goggles allow you to view the world upside down! The plastic goggles hold two Dove prisms, which invert the image. Available in: Ready to use or Kit form - Selection on Right

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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.

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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.

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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. 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...

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  • £ 2.95 Available To Order Tax included

    Made from natural hail, Evoco brushes are the perfect all-round brush for many model and hobby uses, keeping their shape and quality long after their first use. Also includes a small tin of paint suitable for Astromedia reversing goggles dove prism.

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  • £ 44.00 Out of stock Tax included

    Available To Try In-Store Links the real starry sky with the digital world. Look up to the heavens & discover constellations, planets & galaxies. For adults & age 8 plus Representation of all 88 constellations Close-ups of planets, galaxies, star clusters & nebulae Over three hours of audible explanation The Greek myths linked with the...

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

    A superb pair of solar eclipse glasses fully CE approved for safe viewing of eclipses, transits and larger sunspots filtering out 100% of harmful UV whilst showing a true orange solar disk.

    £ 4.95 Tax included
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  • £ 205.00 Delivered In 2-3 Weeks Tax included

    Safe solar observation! 100% UV-protection, 100% IR-protection, sun light intensity reduced by 99,999% Our Solar Viewer AstroSolar® Silver/Gold – MADE IN GERMANY – safely protect your eyes for visual solar observation. This is THE solution to see the partial phase of Solar Eclipses or even big sunspots with your own eyes!

    £ 205.00 Tax included
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  • £ 24.95 Available To Order Tax included

    Safe solar observation with Solar Viewer AstroSolar® Silver/Gold! 100% UV-protection, 100% IR-protection, sun light intensity reduced by 99,999%

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

    The heart of this unusual thermal engine is a thin ring of Nitinol wire (0.3mm). Some warm water is enough to make the Nitinol Engine run. Nitinol is an alloy of nickel and titanium which has exceptional properties: at low temperatures it is soft and bendy, but as soon as it is heated above a certain transition temperature, it instantly becomes hard and...

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  • £ 33.95 Delivery In 1-5 Days* Tax included

    Pre-punched kit with gold, black, red, blue, and white printing. Construction time: 8-12 hours Includes: planet spheres, axles, and PVC bearings.  Height: 34cm, Diameter: 33cm

    £ 33.95 Tax included
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  • £ 5.95 Delivery In 1-5 Days* Tax included

    The Desktop Planetarium is a beautiful instrument and showpiece. But it is also a very useful teaching tool. If you are planning on transporting your valuable Planetarium to different venues, it is helpful if you can take it apart and transport it flat.

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  • £ 46.95 Delivery In 1-5 Days* Tax included

    A world premiere: the first ever fully functional cardboard orrery! It demonstrates the movements of Mercury, Venus, Earth and Moon around the Sun

    £ 46.95 Tax included
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  • £ 5.95 Delivery In 1-5 Days* Tax included

    After lots of use the belts of the orrery can become brittle. Sunlight and over-stretching can speed up this process

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

    Cut-out sheet for a dome-shaped star chart with distortion-free depiction of all stars and constellations visible in the northern sky down to latitudes of 40ºN. Includes date and time markers to simplify locating stars and constellations

    £ 3.50 Tax included
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  • £ 2.95 Delivery In 1-5 Days* Tax included

    If you want to look straight into the sun, you should only do so with the proper eye protection. 

    £ 2.95 Tax included
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  • £ 12.95 Available To Order Tax included

    Literally translated a kaleidoscope is a “beautiful-shape-to-look-at”. Already known by the Greeks , it was re-invented in 1816 by David Brewster. The appeal of this beautiful kit is that you can change the filling of the viewing chamber to produce the most wonderful patterns. Complete with lens and mirrors

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  • £ 35.95 Delivery In 1-5 Days* Tax included

    A steam engine made from cardboard, running with proper boiling steam - is that really possible? Oh yes!!! See for yourself: this model not only looks great, it also works, happily chuff-chuffing away. The boiler, made from an aluminium tin, has a magnetic safety valve. The aluminium fire box underneath holds five tea lights. Both are enclosed in a safety...

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

    The five platonic solids are named after the Greek philosopher Plato, who described them extensively in his dialogue “Timaeus”. He saw in them the smallest, invisible building blocks of the world and assigned them to the classical elements. However, the five solids have been known for much longer, as for example 5000 year old engraved stones from Scotland...

    £ 7.95 Tax included
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  • £ 8.95 Delivery In 1-5 Days* Tax included

    In 1910 the German Poet Christian Morgenstern wrote a poem about an inventor and his “Tagnachtlampe”, a lamp that turns day into night when you switch it on. 49 years later, Carl Barks had his Gyro Gearloose invent a similar device, the “gloom light”. Both ideas were never realised, not even filed for patent!

    £ 8.95 Tax included
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  • £ 9.95 Delivery In 1-5 Days* Tax included

    “The Golden Dividers” is not the name of a secret organisation, nor are they made from gold either. It is a kit for a set of dividers with a third leg that allows for determining the golden ratio in nature and artificial objects, like photographs, sculptures, drawings, etc. 

    £ 9.95 Tax included
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  • £ 3.95 Delivery In 1-5 Days* Tax included

    Cardboard kit for a fully functional slide rule, the predecessor of the pocket calculator. Allows for easy multiplication, division, calculation of squares, cubes, square and cubic roots, as well as the inverse.

    £ 3.95 Tax included
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  • £ 5.95 Delivery In 1-5 Days* Tax included

    The Royal Cubit played a central part in the culture of ancient Egypt since its very beginnings 5000 years ago and is therefore one of the very first standards of measurement. In nearly every historical egyptian building and artefact you can find parts made to fractions or multiples of this cubit

    £ 5.95 Tax included
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  • £ 1.95 Delivery In 1-5 Days* Tax included

    Only 2 inches small but already an AstroMedia classic, not only for children’s birthday parties. The colourful cardboard ring holds a special spectral film that turns any light source into a fan of breathtaking rainbow colour. Just hold the Twinky close to your eye and look through it.

    £ 1.95 Tax included
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  • £ 5.95 Delivery In 1-5 Days* Tax included

    It was a historic moment when Thomas Alva Edison succeeded in recording his voice in 1877. This Pocket-Phonograph goes back to one of his patents as well A thin strip with grooves carved into one side is connected to a resonator. The recorded sound can then be played back with the nail of your thumb.

    £ 5.95 Tax included
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  • £ 5.45 Delivery In 1-5 Days* Tax included

    A spinning top that turns upside-down when spun fast enough! The Tippe Top was invented by the Munich nurse Helene Sperl at the end of the last century. The centre of gravity of the Tippe Top lies below the centre of the sphere.

    £ 5.45 Tax included
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  • £ 3.95 Delivery In 1-5 Days* Tax included

    A small tube that has a great effect: Take two ordinary plastic drink bottles, fill one two thirds with water and  then connect the two bottles with our Bottle Tornado tube. When you now turn the bottles upside-down, the water starts gurgling down, creating a large vortex (you might have to squeeze the lower bottle a bit to start the process)

    £ 3.95 Tax included
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Showing 1 - 30 of 87 items