Objectives 3, 7.

Eye-pieces I, III.

Magnifications 60-450 =74.--=

8. =The same= without Illuminating Apparatus and without nose-piece.

Objectives 3, 7.

Eye-pieces I, III.

Magnifications 60-450 =68.--=

=Stand= without objectives and eye-pieces, without illuminating apparatus and without nose-piece =46.--=

=Stand= without objectives and eye-pieces, with illuminating apparatus, without nose-piece =70.--=

=The same= with illuminating apparatus, with swing-out condenser and cylinder iris-diaphragm (p. 22 a) =76.--=

[Ill.u.s.tration: Stand II.]

=Stand II.=

9a. =Medium Size Microscope=, inclinable, with revolving centering vulcanite stage, coa.r.s.e adjustment by rack and pinion, fine adjustment by micrometer-screw. Draw-tube with millimetre scale. Illuminating apparatus and iris- diaphragm with lateral screw for raising and lowering.

A ring under the iris diaphragm serves to hold a ground gla.s.s or colored disc. The illuminating apparatus and cylinder diaphragm are easily interchangeable.

Triple nose-piece.

Objectives 3, 6, Oil-Immersion 1/12, N. A. 1,30.

Eye-pieces I, III, IV.

Magnifications 60-1000 =126.--=

9b. =The same= with Illuminating Apparatus.

Triple nose-piece.

Objectives 3, 6, Oil-Immersion 1/10, N. A. 1,30.

Eye-pieces II, IV.

Magnifications 70-730 =114.--=

9c. =The same= without Illuminating Apparatus.

Triple nose-piece.

Objectives 3, 6, 8.

Eye-pieces I, III.

Magnifications 60-550 =90.--=

9d. =The same= without Illuminating Apparatus.

Double nose-piece.

Objectives 3, 7.

Eye-pieces I, III.

Magnifications 60-450 =72.--=

9e. =The same= without Illuminating Apparatus and nose-piece.

Objectives 3, 7.

Eye-pieces I, III.

Magnifications 60-450 =66.--=

=Stand= with Illuminating Apparatus and Iris-diaphragm, without objectives, eye-pieces and nose-piece. =54.--=

=The same stand= with Cylinder Diaphragm =44.--=

=Stand= with illuminating apparatus, swing-out condenser and cylinder iris diaphragm =60.--=

=Cylinder iris diaphragm= (Cf. p. 23) =6.--=

[Ill.u.s.tration: Stand IIa.]

=Stand IIa.=

9. =Medium Size Microscope=, inclinable, coa.r.s.e adjustment by rack and pinion, fine adjustment by micrometer-screw.

Draw-tube with millimetre scale. Illuminating apparatus and iris-diaphragm with lateral screw for raising and lowering. A ring under the iris diaphragm serves to hold a ground gla.s.s or colored disc. The illuminating apparatus and cylinder diaphragm are easily interchangeable.

Triple nose-piece.

Objectives 3, 6, Oil-Immersion 1/12, N. A. 1,30.

Eye-pieces I, III, IV.

Magnifications 60-1000 =120.--=

10. =The same= with Illuminating Apparatus.

Triple nose-piece.

Objectives 3, 6, Oil-Immersion 1/10, N. A. 1,30.

Eye-pieces II, IV.

Magnifications 70-730 =108.--=

11. =The same= without Illuminating-Apparatus.

Triple nose-piece.

Objectives 3, 6, 8.

Eye-pieces I, III.

Magnifications 60-550 =84.--=

12. =The same= without Illuminating Apparatus.

Double nose-piece.

Objectives 3, 7.

Eye-pieces I, III.

Magnifications 60-450 =66.--=

13. =The same= without Illuminating Apparatus and nose-piece.

Objectives 3, 7.

Eye-pieces I, III.

Magnifications 60-450 =60.--=

=Stand= with Illuminating Apparatus and Iris-diaphragm, without objectives, eye-pieces and nose-piece =48.--=

=The same stand= with Cylinder Diaphragm =38.--=

=Cylinder iris-diaphragm= (Cf. p. 23) =6.--=

[Ill.u.s.tration: Stand IIb.]

=Stand IIb.=