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Very large folding "Linen Tester" magnifier, lens size 2.5X90

Very large folding

Ref: JAN-FD90


Including VAT
QuantityPrice per item
4 or fewer items 5.50
5 to 9 items 5.22
10 or more items 4.68



An extraordinarily large 'linen tester", obviously not for extraordinarily large sheets of linen, people like these simply because they fold up quite small and open out on a stand.

Limited quantity (see above for the quantity in stock) - once these are gone, there are no more.

Read all about magnification and how to choose a magnifier, click here.

This is a very low value item. We have a minimum order charge of 7.50 (6.25 + VAT). Is this the only item you require? You may wish to buy more than one, or add some other items to the order.

We have a calculator that shows you the working distance for any magnification, or the magnification for any working distance (Excel format), click here.

Type: folding (linen tester)

Magnification / lens size in mm: 2.5X90

Lens material: plastic

Lens type: Single lens


- top (the bit with the lens) - 96mm X 96mm
- lens (the circle in the top that is the actual lens) - officially 90mm dia though the visible lens is a bit smaller
- height (from lens to object) - 132mm
- base (the bit that rests on the object): - 97mm X 96mm
- folded 35mm high; 96mm wide; 134mm deep

Graduations around the base 60mm/1mm and also 2 1/4in/ 1/4in

Origin / brand: China

Casing: plastic

Finish: matt black

Presentation / extras: cardboard box

{Applications / quality}

A linen tester (also known as a linen prover) is a folding magnifier, traditionally used for measuring the threads-per-inch on linen, which is why it has a scale marked around the base. Today, they are mostly used for viewing stamps, coins, prints and photos - anything flat. They come in all sizes from 15mm to 90mm, one even has a light.

Specifically, a nice cheap option as a rest-on-page magnifier for reading text, the lens is set at just the right distance and is quite large. It is also large enough to work under, e.g. for small jewellery repairs, a good choice if you're carrying it around and need it to fold up compactly. However, the lens cannot be 'tilted' so if space is not at a premium, it would be better to buy a "small stand magnifier".

Not quite what you were looking for? You want a magnifier that rests on the page for reading? We have a few of these, especially designed for the partially-sighted, see our rest-on-page magnifiers
you want a small stand magnifier, but not one that folds, and one that has a high quality lens? See our small stand magnifiers

Too small? Need a stand magnifier that is larger, with space to work under? See our large stand magnifiers (bench magnifiers).

Almost right, but you DO need something considerably more powerful (a large single lens is ALWAYS low-power), AND it must still give stereo vision. Try the type of head-worn magnifier surgeons use. click here. These are good for watch repairing or for work on micro-circuits.

Not good enough?! Need a microscope? click here.

I haven't offered a wholesale price on these because

a) we only have a few, the retail price is way below normal
b) if you order 10 or more, you pay less than the wholesale price
c) available only while stocks last


if you want an import-quantity, the pack size (minimum quantity) will be somewhere between 144 and 360, the minimum spend is $5000.00 (about £3,300.00) and delivery is 3 to 4 months. Quotes available, serious enquiries only please.