3. Stand II with round centering stage.
4. Stand IV is replaced by a model of larger size.
5. Photo-micrographic apparatus for use in horizontal and vertical position, having joint for inclination, large size bellows and plateholder.
6. Large projection-apparatus for electric lamp of 30 Ampère with triple collecting lens of 210 mm aperture.
7. Objective 1 a with adjustable mounting and changeable magnification. It is an excellent objective of low power for general purposes, having a comparatively short working distance.
8. Objective 1 b with changeable magnification of lowest power, as far down as two diameters. It serves for drawing extended sections and specimens.
9. Saccharimeter after Mitcherlich improved form.
10. Trichinoscope, projection-apparatus of strong and simple construction.