Wild Heerbrugg has produced in Switzerland from 1947 to 1990 the finest microscopes ever. The M20 was their masterpiece. The M11 is a superb portable microscope.

Here is an inventory of the objectives they have produced (to be completed…).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NA

Normal

 

 

Phase contrast

 

 

Epi

 

 

Pol

Hoffman

 

 

Achro

Fluotar

Plan Fluotar

Achro

Fluotar

Plan Fluotar

Varicolor

Achro

Achro RMS

Plan Fluotar

Achro

Achro

 

HI 100X iris

0.80-1.25

0.8-1.3

 

 

 

 

 

 

 

 

 

 

 

HI 100X

1.25

1.3

1.3

1.25

1.3

 

1.3

1.25

 

 

1.25

 

 

HI 85X

1.25

 

 

1.25

1.25

 

 

 

 

 

 

 

 

60X

0.7

 

 

 

 

 

 

 

 

 

 

 

 

HI 50X

 

1

1

 

1

 

1

 

 

 

 

 

 

50X

0.85

 

 

 

 

 

 

 

 

 

0.85

 

 

40X

0.65

0.75

0.65

0.65

0.75

 

0.65

0.65

0.65

0.65

0.65

0.65

 

20X

0.45/0.40

0.60/0.45

0.60/0.45

0.45

0.6

 

0.6

0.45

0.45

0.45

0.45

 

 

10X

0.25

0.45/0.40

0.25

0.25

0.40/0.25

 

0.45

0.25

 

 

0.25

0.25

 

7X

0.2

 

 

0.2

 

 

 

 

 

 

 

 

 

6X

 

 

0.2

 

0.2

0.2

 

 

 

 

0.2

 

 

4X

0.1

 

 

 

 

 

 

0.1

 

 

0.1

 

 

3X

0.1

0.1

0.1

 

 

 

 

 

 

 

 

 

 

2X

0.06

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Here are some very useful links:

 

Virtual Archive of Wild Heerbrugg

Wild_M20 : Wild Heerbrugg Microscopes (Yahoo group)

Wild M20 - Microscopy-UK

Wild M20 Microscope

Harvard University - Department of History of Science

 

 

If you are looking for a good field microscope, the Swift FM 31 is the one you need!