How Can I Find Out The Strength Of My Current Magnifying Glass?

[ladybirder]

It's no longer strong enough for me and I need to get a stronger one.  Being disabled doesn't help as I can't wander around the shops to check stuff out. If a friend took mine to an opticians would they be able to tell do you think?  

[bookbinder]

https://clicreaders.au/img/Clic-Magnification-Chart.pdf

[davebro3]

look online for strong magnifiers?

[THECORBYLOON]

They should be able to determine the magnification but if you're able to go to an optician they would then be able to discuss the best options for you.

[calda49]

There are opticians who will come to your home,(Specsavers I think). They would possibly be able to help, and perhaps provide a pair of glasses at the same time.

[ladybirder]

Thank you everyone.  I'll have a think.

[Hymie]

Apparently the magnification (of a magnifying glass) is given by 250 divided by the focal length (in mm).

 

Google says ‘You can find the focal length by holding the magnifying glass near a distant object (like a window or a tree) and moving the glass until a clear, focused image appears on a piece of paper.  Measure the distance between the lens and the paper; this is the focal length.‘

 

Quite how you hold the magnifying glass near a distance object without long arms, google does not say.

[Tilly2]

Google home visiting opticians, LB.

Specsavers do do them.

[bhg481]

You only need a rough idea of the focal length. Hold the lens near the wall opposite a window and measure the distance the lens is from the wall when the image is sharp; you don't need to be really accurate as you're only looking for a rough figure. 250/that distance will give you a starting point to find a lens with a higher value than that.

[Peter Pedant]

yes they cd

[ladybirder]

Sorry but I am NOT wanting new glasses.  I am just wanting a stronger hand held magnifying glass.

[PsalmEquipt]

Focus sunlight onto a piece of paper. The focal length is the distance from the lens to the smallest point of light. The magnification is 25 divided by the focal length in cm. For example, if the focal length is 8 cm, the magnification is 25/8 or approximately 3x. https://www.amazon.co.uk/gp/bestsellers/officeproduct/200859031