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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

Meteorology & Navigation There are 14 products.

Showing 1 - 14 of 14 items
  • £ 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
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 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
    1-5 Days UK Delivery*
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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
    1-5 Days UK Delivery*
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  • £ 19.99 Available To Order Tax included

    Bring nature’s most beautiful light show into your bedroom and fill your room with rainbows. Enchanting light projector uses multi-coloured LEDs to display rainbow colours on walls and ceilings in a darkened room. Two illumination modes: instant or fade. Auto shut-off saves battery life.

    £ 19.99 Tax included
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  • £ 36.99 Available To Order Tax included

    Awarded a ’Commended’ Medal in the 2013 Toy Shop UK Independent Toy Awards and featured in The Good Toy Guide, this amazing globe shows the earth by day and space by night – 2 globes in 1!

    £ 36.99 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*
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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
    1-5 Days UK Delivery*
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  • £ 43.95 Delivery In 1-5 Days* Tax included

    Our Goethe Wall Barometer is hand blown from a traditional glass formula called “forest glass” in Lauscha, Thuringia in Germany. It is a copy of the original barometer from 1792/93 that was found in Goethe’s house in Weimar after his death. The slight green tinge of the glass and its texture make it look like a real antique. 

    £ 43.95 Tax included
    1-5 Days UK Delivery*
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  • £ 4.95 Delivery In 1-5 Days* Tax included

    Incredible: a key ring that turns into a proper kite of nearly half a metre wingspan! It doesn’t need any rods, it is stabilised by two air pockets. The whole kite fits into a tiny pocket that is attached to a key ring. A fantastic toy for young and old. Complete with 15 metre string on a spindle.

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

    Air ship shaped balloon, 3 m long, 0.6 m thick, made from thin black film. The sun warms up the enclosed air and makes the zeppelin rise, even in winter. Complete with 50 m string. 

    £ 7.95 Tax included
    1-5 Days UK Delivery*
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  • £ 5.50 Delivery In 1-5 Days* Tax included

    a)Room thermometer, range 14°C to 31°C in steps of 1°C, 18 x 130 mm, self-adhesive b) Round thermometer, range 14°C to 32°C in steps of 2°C, diameter 50 mm, self-adhesive c)Fever thermometer, range 35°C to 40°C in steps of 1°C, 18 x 90 mm. Just press on the forehead for 5 seconds to measure the body temperature.

    £ 5.50 Tax included
    1-5 Days UK Delivery*
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  • £ 19.95 Delivery In 1-5 Days* Tax included

    The classical instrument for measuring angles as used by sailors and discoverers. A sturdy kit with two unbreakable stainless steel mirrors and a sun filter. This sextant is not a toy but a fully functional instrument with an accuracy of 5-10 arc minutes!

    £ 19.95 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 7.95 Delivery In 1-5 Days* Tax included

    Fits onto the sextant and upgrades it for use on dry land when the true horizon is not visible or difficult to see.  

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

    Build a beautiful fully functional magnetic compass to take bearings and find the cardinal points. This excellent kit is more than a toy and allows an accurate fix on land and sea marks. Comes with its own protective case

    £ 8.95 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
Showing 1 - 14 of 14 items