Burning glassW
Burning glass
Coddington magnifierW
Coddington magnifier
Dome magnifierW
Dome magnifier
GraphoscopeW
Graphoscope
Linen testerW
Linen tester
LoupeW
Loupe
Magnifying glassW
Magnifying glass
Pocket comparatorW
Pocket comparator
Reading stoneW
Reading stone
Stanhope (optical bijou)W
Stanhope (optical bijou)
Stanhope lensW
Stanhope lens
Video magnifierW
Video magnifier
ZograscopeW
Zograscope