Magnifier, plastic, set of 2
A package of two reasonable quality, inexpensive plastic magnifying glasses.  One lens is 6 cm across, the other is 4.5 cm.
MAGG.27   Single package   $1.95 single set of 2
MAGG.26   Dozen packages  $22.95 (2 per pkg gives a total of 24 magnifiers, 12 of each size.)

Magnifiers, glass
Solid, scratch-resistant glass lens, metal frame. Standard issue Sherlock Holmes equipment, but also good for stamp collecting, insect viewing, etc.  
MAGG.21   2" lens   $6.95 each
MAGG.30   4" lens   $14.95 each
MAGG.31   4.5" lens   $16.95 each

Magnifier, Table Top Tripod
Huge three and a half inch plano-convex glass lens.  Pre-focused, just place on top of object to be viewed.  4 inches (100 mm) tall.  Excellent for primary grades, or hands-free magnification for finely detailed work.
MAGG.24   $35.00 each

Magnifying Box, small
Small clear acrylic box, removable lid has 4X magnifying lens.  Great "bug box" for capture & observation of insects, as well as examination of rocks and nature specimens of all kinds!  25 X 25 X 22 mm high.
MAGG.15   $1.50 each

Magnifying Box, large
Similar to above, lid has 3X lens. 38 X 38 X 38 mm high.  ("Large Bug Box")
MAGG.16   $3.00 each

Magnifying Insect Bucket
More for the younger naturalist, this clear acrylic toy is 7 cm (2 3/4") in diameter and 6 cm (2") high with removable lid, air holes top and bottom and a plastic "bucket handle".  Comes with....... (wait for it.......) ........a big day-glo plastic bug!  (What are the manufacturers thinking, that we need some sort of example to start us off?)  Anyhow, it really does magnify, and it is inexpensive enough that you won't mind if it ends up all scratched from being used in the sandbox.  
MAGG.35   $1.75 each

Jeweler's Loupe
Magnifying Loupe, "Jeweler's Eye Loupe" type, 5X acrylic lens.  Usually used by people doing fine close-up work that needs to be magnified.  Adults can "squint fit" these directly over their eye so their facial muscles will hold it in place, thus freeing both hands for work.  Can be stacked together for increased magnification.  
MAGG.37   $3.00 each

Folding Triple Hand Lens
Pocket loupe with three lenses that can be used singly or all at once to increase magnifying power.  Lenses fold into case, assorted pastel colours.  All plastic, lenses are 1" in diameter.
MAGG.19   $2.50 each

Optic Centre
Five functions in one unit.  Magnifying lenses, double magnifiers, binoculars, compass and signal mirror.  Assorted colours, with neck cord.  Great gift idea, especially as a stocking stuffer.  For ages 4+.
MAGG.17   $7.95 each

Lens Paper
Lens wipe paper, 50 sheets.  For cleaning fine optics.
LENS.01   $2.95/pkg

Glass Lenses
We have a variety of odd glass surplus lenses in stock.  Some are near perfect, some seconds with slight scratches or chips.  We have plano-convex, double convex, plano-concave & double concave, diameters from 30 to 75 mm, with a variety of focal lengths.  Range from $2 to $10 each.  Call or visit us with your needs, and we will try to match them as closely as possible.  Also, for those that want a real challenge, we sell surplus eyeglass lenses (LENS.28 - unmounted) for 50 cents each .  Most of them are plano-concave.  Use them as "unknowns" to determine focal lengths.  Some are plastic, most are glass (a few are even bifocal). Visit us, you may be surprised!

Lens Set, Demonstration
Teaching set of 6 unmounted clear glass lenses, all 50 mm diameter.  Includes one each of: Bi-convex (F.L. 150 mm)
Bi-concave (F.L. 150 mm)
Plano-convex (F.L. 200 mm)
Plano-concave (F.L. 200 mm)
Convexo-concave (F.L. 200 / 500 mm)
Concavo-convex (F.L. 200 / 500 mm)
LENS.07   $29.95/set

Mirrors, round, glass, concave
MIRR.08   Concave, 100 mm dia., F.L. 25 cm   $8.00 each
MIRR.09   Concave, 75 mm dia, F.L. 7.5 cm   $5.00 each
MIRR.10   Concave, 50 mm dia, F.L. 5 cm   $4.00 each
MIRR.11   Concave, 38 mm dia, F.L. 25 cm   $3.00 each
We have a few larger concave mirrors available, purchased as surplus, up to 27 cm across!   Call or visit for sizes and prices.

Mirrors, round, glass, convex
MIRR.12   Convex, 100 mm dia., F.L. 25 cm   $8.00 each
MIRR.13   Convex, 75 mm dia., F.L. 7.5 cm   $5.00 each
MIRR.14 *   Convex, 50 mm dia., F.L. 5 cm *    $4.00 or $1.00 each*
MIRR.15   Convex, 38 mm dia., F.L. 25 cm   $3.00 each

(* NOTE * Most of MIRR.14 are good quality, but we have a limited number of MIRR.14 that are defective, appearing to have corrosion of some sort around the edges.   These are the ones that would be $1.00 each.  Still useful for demonstration purposes, though.)

Mirror, magnetic
Want to make a rainbow without a prism?  Rest a flat mirror at an angle in a shallow pan of water (1" to 2" deep) in a sun beam (flashlights are just not strong enough).  The "wedge" of water above the mirror acts like a prism and will break up the sunlight into the spectral colours.  It also helps if the room is darkened slightly.  (If you prefer to use a real prism, we sell those, too.)   This particular mirror is made of glass (not plastic), light weight, 10 X 14 cm mirrored area (total size 13.5 X 17.5 cm including plastic frame) and has a magnetic back.   Can also be used as a locker mirror or as a camping mirror when not performing amazing pheets of fizzix.  This mirror is glass, not plastic.   For FLEXIBLE reflective material, see "Aluminized Mylar" below.
MIRR.20   $1.95 each

Mirror, square/rectangular, glass
Excellent quality flat plane glass mirrors, all edges ground for safety, but NOT unbreakable.  Recommended for children 10+.
MIRR.03   100 X 100 mm, plane surface   $2.95 each
MIRR.04   150 X 38 mm, plane surface   $2.25 each

Mylar, Aluminized
This is the stuff you've been waiting for!  Thin, flexible mylar with a mirror-like finish on both sides.  Thin enough to be rolled, creased and cut with scissors, and stiff enough to spring back flat when rolled.  Excellent for making class sets of inexpensive kaleidoscopes and periscopes!  Very safe, no sharp edges.  With a slight transmission ability, can even be used to make two-way mirrors.  Sold as sheets 12" X 42".
MYLR.01   $5.95 each

Prism, right angle
Unbreakable acrylic right angle prism, 45 mm long.  Refract white light to create a rainbow, or make a periscope!
PRIS.01   $6.95 each

Prism, equilateral
Unbreakable acrylic equilateral prism, 125 mm long with each side measuring 25 mm wide.  This prism makes a much wider spectrum than PRIS.01 above.  As with all prisms, pure sunlight is preferred over sources of artificial light to create delightfully intense spectra.
PRIS.10   $8.95 each

Rainbow Bouncer Disk
Place this reflective diffraction grating disk on a sunny window sill and project a stunning display of rainbow spots around the room.
PRIS.03   $2.50 each

Diffraction Slides
Clear diffraction grating, 1,000 lines per mm, single axis.  Mounted in 35 mm slide frame, used to make simple spectrometers.
PRIS.04   $1.50 each

Rainbow Diffraction Glasses
Very popular!  Thin cardboard frame glasses (one size fits all) with clear diffraction grating lenses.  Any point source of light becomes the centre of a burst of rainbow colours. (Toto, I don’t think we’re in Kansas anymore!)   Imagine fireworks times eight when viewed through these glasses!  Fabulous effect, great for Light & Colour unit, if the kids can ever get them away from the adults!  (Never look directly at the sun!)
PRIS.05   $1.95 each

Rainbow Peephole
Four-axis diffraction grating to give eight-pointed star spectra, identical effect to the Rainbow Diffraction Glasses (PRIS.05) above, but cheaper.  Excellent for classroom incentives, giveaways, rewards or party treats.  Colourful cardboard disk, 1 3/4" diameter total with centre hole holding the clear diffraction grating. 
PRIS.08   single   $0.50 each
PRIS.09   lot of 10   $4.50 /lot

3-D Glasses
Similar looking to the Rainbow Diffraction Glasses above (thin cardboard frames), but with one red lens and one blue lens.  When special pictures are viewed, a really cool 3-D effect is seen.  Excellent for viewing the Mars Pathfinder web sites with 3-D photographs of the surface of the planet Mars!
GLAS.01    $1.95 each

Solar Viewing Glasses
Called "Eclipse Shades", these are thin cardboard paper frame glasses with special black polymer lenses, safe for sun observation, either during a solar eclipse or anytime.  With these glasses, you can even comfortably view the filaments of high-intensity household bulbs like halogens.  Normal low-intensity light will not pass through, so don't wear these while operating machinery, or even just walking around!   Use with caution and adult supervision. 
GLAS.03   $3.95 each

# 14 Welder’s Glass
Yes, we sell that hard-to-find welder’s glass that astronomers recommend for viewing solar eclipses safely.  Called Welder’s Glass shade 14-H, it is a 10.7 cm X 5 cm (2" X 4 1/4") piece of special glass so dark, ordinary room lights can’t be seen through it.  Heat treated glass filter plate provides infrared and ultraviolet protection while viewing the sun.  Impact resistant, but not unbreakable.   Conforms with ANSI Z87.1-1989 and CSA Z94.3M-1988.
SOLR.02   $4.95 each