The scale of the instrument which indicates the thickness of the section is divided into 12 divisions, the value of each division being -002mm., the total being -024mm. It will cut uniform sections of any size required within these limits, and objects up to 12mm. X 20mm. in cross section can be dealt with.

No, 3891

Four types of object holders are made, all of which are interchangeable and can be quickly mounted on the microtome, being held in position by a single clamping screw. The simple object holder consists of a brass tube with a partition inside it about 1cm. from one end. This end is filled with paraffin wax, which projects about 1cm., permitting objects to be attached. The object holder for wood blocks consists of a brass tube with clamping screw and wood block, to which the object is fixed. A large variety of specimens can be kept on the wood blocks which are supplied, and transferred quickly to the microtome without the necessity of making wax joints.

The simple pattern orientating object holder consists of a brass tube with a cup-shaped end. A brass hemisphere fits in this end and can be clamped in any position. The hemisphere is filled with paraffin wax on which the object is stuck.

The orientating object holder with adjustments is very similar to the simple pattern, except that screws are provided for adjusting the position of the object. There are two adjusting screws, one of which actuates the object about a horizontal axis, the other about a vertical axis. No. 3890. Cambridge Rocking microtome complete with simple object holder, simple orientating object holder and knife Orientating object holder with adjustments Orientating object holder, simple pattern

Object holder for wood blocks ............

Simple object holder ... .........

Spare hard wood blocks, 22mm. square ...

Spare hard wood blocks, 16mm. X 22mm.

Knife, Sheffield make ....................

No. 3891. No. 3892. No. 3893. No. 3894. No. 3895. No. 3896. No. 3897.

per dozen per dozen

£6

1

0

0

0

0

0

0

18

10

7

15

2

2

2

3

01

01

01

01

61

01

01

61

Cathcart microtome. This consists of a central fitting which carries either an ether

freezing chamber or embedding cell which is raised by a fine screw. On either side of the fitting are two metal rails and the section is cut by sliding a frame containing a razor along these rails. The microtome is clamped to the table by two clamps.

No. 3605. For embedding only ... £2 15 6

No. 3606. For embedding and

freezing ... ... 3 15

No. 3607. Thickness register ... 0 7

No. 3606

No. 3602. Hand microtome, constructed of solid brass 1| in. diameter with well |in. diameter. Though simple in design, being solidly made, considerable accuracy can be obtained. The raising screw has

approximately 40 threads to the inch ............ £0 15 6

No. 3432. Razor, flat one side, for use with above .......... 0 2 9

97

No. 3602.

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Le texte affiché peut comporter un certain nombre d'erreurs. En effet, le mode texte de ce document a été généré de façon automatique par un programme de reconnaissance optique de caractères (OCR). Le taux de reconnaissance estimé pour cette page est de 98,43 %.

La langue de reconnaissance de l'OCR est l'Anglais.

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