"Linen Counters"
This type of magnifier was originally used by fabric mills to count the number of threads in linen and other fabrics, thus the name.  The design proved so useful that today they are used by many industries and by individuals for a host of chores.  Their best feature is that fold up into a compact little package that slips easily into pocket or purse.   Ideal for those on the go.  All have glass lenses.
2.5" "Linen Counter" -
5X Magnification
  No. TL135-L6.  Only $6.95
3" "Linen Counter" - 3.5X Magnification
  No. TL135-L7.  Only $7.95

4.25" "Linen Counter" -
2X Magnification
  No. TL135-L4.  Only $9.95
 
3" Diameter Illuminated Linen Counter
3.5X Magnification.  Glass Lens.  ABS body.
No. TL135-LL. Only $12.95