Miscellaneous Accessories.
Reading edition
Analizer. Polarizer. Polarizing Apparatus No. 144.
No. 144. Polarizing Apparatus for Food Analysis. The analizer forms part of an ocular which fits into the tube of the microscope and is provided with a graduated disc and index. It is fixed in any desired position by means of a thumb-screw. The polarizer, when used in connection with stands fitted with a substage condenser and iris-diaphragm, is hung in the carrier of the iris diaphragm; when used on other stands it takes the place of the cylinder diaphragm, and if desired may be furnished with a condenser. Price $22.—
No. 145. Simpler Polarizing Apparatus. The analizer is without an ocular and has no graduated disc. The polarizer is as described above $14.—
No. 146. Gypsum and Mica plates set of 8 $6.—
No. 147. Coverglass Tester, for measuring the thickness of coverglasses $3.75
No. 147a. Coverglass gauge, dial form, for the rapid and accurate measuring of coverglasses, thin plates etc. A slight pressure on a lever opens a pair of steel clips. The exact thickness is at once indicated by a pointer moving over a divided circle on the lid of a metal box. The gauge measures 0,01 up to 5 mm $12.—
No. 148. Nose-piece for two objectives—Double nose-piece $6.—
No. 149. Nose-piece for three objectives—Triple nose-piece $8.—
No. 150. Nose-piece for four objectives—Quadruple nose-piece $10.—
Nose-pieces can be adjusted to our stands at any time without charge.
No. 151. Iris-diaphragm $6.—
Illuminating Lens No. 152.
No. 152. Illuminating Lens on stand, 100 mm diameter $12.—
No. 153. Illuminating Lens on stand, 60 mm diameter $8.—
No. 154. Glass slides, hollow, per doz $—.75
No. 155. Glass slides, English form 3×1", of plate-glass with polished edges, per gross $1.—
No. 156. Glass slides, with well, for moist chambers $—.40
No. 157. Cover-glasses, squares, 15×15 mm, per 100 $—.60
No. 158. Cover-glasses, squares, 20×20 mm, per 100 $—.85
No. 159. Cover-glasses, circles, 15 mm diameter, per 100 $—.85
No. 160. Cover-glasses, circles, 20 mm diameter, per 100 $1.—
Turn-table No. 161.
No. 161. Turn-table, for ringing, with adjustable slide clips $4.—
No. 162. Thickened Cedar Oil for oil-immersion lenses, 1 oz $—.40
No. 163. Object Marker. This is designed to indicate the exact portion of an object which has been seen in the field of the microscope. After finding the required field, the objective of the microscope is unscrewed and the marker is screwed into the tube in its place. By then moving the tube so that the marker comes in contact with the object that portion of the object which occupied the optical axis of the microscope is indicated $1.25
No. 164. Object Marker with diamond point, by means of which the object can be marked by drawing a circle $4.—
No. 165. Demonstration Ocular of Kuznitzky (Cf. Zeitschr. f. wissensch. Mikroskopie, XIII, 1896).—Indicates any particular portion of the image to which it is desired to draw particular attention. A small lever at the top of the ocular moves an indicator just above the diaphragm of the ocular to any part of the field $3.25
No. 166. Opaque Illuminator, for illuminating polished pieces of metal whose structure is to be investigated by means of high power objectives—A collar, carrying a prism, screws into the tube of the microscope, and by means of the prism sufficient light is thrown through the objective upon the otherwise opaque object to permit of its examination up to 1000 diameters magnification $6.—
No. 167. Erecting Prism—This is fastened over the ocular and erects the image received from the compound microscope, thereby materially assisting any dissection or other operation on the stage of the microscope $7.25
No. 168. Microscope for the accurate reading of thermometer scales, after Fridtjof Nansen. Stand with spring-clamp to attach thermometers of various sizes. With micrometer ocular and objective magnifying 12 times $20.—
No. 169. Saccharimeter, Mitscherlich's (improved form), for determining the amount of sugar contained in liquids, glucose etc. by measuring the angle of rotation. Tube with concave mirror on stand, graduated scale with vernier and lens for reading one-tenth of a degree of rotation. The rotation of the Nicol prism with the vernier is performed by means of an endless screw. The adjustment is accomplished as soon as the two squares of the divided quartz-plate show the same color. Two tubes of 100 and 200 mm length, for the liquid to be examined, are supplied with the apparatus. Should the rotation of the substance examined be excessive, it is necessary to use sodium light for illumination $52.—
Saccharimeter No. 169.
Microscopical cases.
No. 170. Case, containing a razor, spatula, two small knives, straight and curved scissors, forceps, two needles, two lancet-shaped needles $5.50
No. 171. Case, containing a razor, spatula, a small knife, two needles, small scissors, and forceps $4.—
No. 172. Case, containing a small knife, small scissors, forceps and two needles $2.50
No. 173. Botanical Outfit in case, containing a small knife, forceps, self-closing forceps with horn handle, two scissors, two needles and two lenses $5.50
No. 174. Outfit for Sputum Examinations, after Kaatzer, consisting of a platinum needle, blower, cover-glass forceps, and a small rubber plate $4.75
No. 175. Leather Microscope case to protect the mahogany case when travelling $8.—
No. 176. Leather case to protect the mahogany cases of larger size instruments $12.—
No. 177. Bell jar for covering microscope $2.—
Any of the following publications will be sent on application:
1. Catalogue of microscopes etc., which has been issued in three editions, viz. in
a) English,
b) German and
c) French.
2. Anleitung zum Gebrauch des Microscops.
3. Instructions pour l'emploi des microscopes.
4. Directions for using the Microscope.
5. On the method of counting red and white corpuscles with Thoma's Apparatus.
6. Instructions pour l'emploi de l'hématimètre de Thoma.
7. Anleitung zur Mikrophotographie, mit vier Mikrophotogrammen.
8. Anleitung zum Gebrauch des Mikrospectroskops.
9. Anleitung zum Gebrauch des Oculars nach Ehrlich.
10. Description de l'oculaire d'Ehrlich.
11. Direction for using Ehrlich's eye-piece.
12. Anleitung zum Gebrauch des grossen Projectionsapparates.
13. Anleitung zum Gebrauch des Saccharimeters.
