| 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.— |
