Wild Drawing Tube after Treffenberg, Modified for
$375.00
This Wild Drawing Tube has been tested and is not working properly – selling as parts.
Here is a very rare item. It is a drawing tube assembly (after Treffenberg) initially made for the Wild M20 compound microscope, however this tube has an interesting modification. The mounting flange for the tube fits the tube fittings on the Zeiss ‘Grayline’ instruments. The receptacle for the viewing tube has not been altered – in other words it requires a Wild style viewing tube. The modification appears to have been done at the Heerbrugg factory since the entire central prism holder has been machined with the Zeiss flange accommodation in mind. It is not possible to simply remove the Zeiss flange and replace it with the Wild flange.
The drawing tube is interposed between the viewing head and the stand. A beam-splitter in the intervening disk superimposes an image of the desktop adjacent to the microscope onto the microscope image. The magnification ratio between the microscope image and the desktop image is regulated by a sliding sleeve (with the +V and V- markings). The desktop image is focused with the chrome knurled ring on the distal end of the tube. There is a swing-out filter holder in which a neutral density filter may be placed to assist in balancing the illumination (neutral density filters are not included).
The tube has a magnification factor of 1.25x. The optics in the tube are perfect – no delamination and no blemishes in the surface. Cosmetically the tube is in excellent condition showing some minor signs of use – most notably in the uneven finish of the distal prism housing (see last photo).
Drawing tubes remain an important device in the microscopists arsenal – often they are very helpful to make drawings of highly complex subjects in which the details of interest are otherwise obscured. They are also very useful during video microscopy if you wish to superimpose some sort of readout on the image while recording some dynamic event.
BMI Surplus, Inc. is your best resource for microscopes and microscope components. We will work with you individually to find the perfect microscope for your application. For the most competitive pricing contact us by phone or click the purple �Ask us a question�� link above. We look forward to working with you!
***MPN Drawing Tube
***OEM Wild
***SKU*** 20009
1 in stock
Description
Description
This Wild Drawing Tube has been tested and is not working properly – selling as parts.
Here is a very rare item. It is a drawing tube assembly (after Treffenberg) initially made for the Wild M20 compound microscope, however this tube has an interesting modification. The mounting flange for the tube fits the tube fittings on the Zeiss ‘Grayline’ instruments. The receptacle for the viewing tube has not been altered – in other words it requires a Wild style viewing tube. The modification appears to have been done at the Heerbrugg factory since the entire central prism holder has been machined with the Zeiss flange accommodation in mind. It is not possible to simply remove the Zeiss flange and replace it with the Wild flange.
The drawing tube is interposed between the viewing head and the stand. A beam-splitter in the intervening disk superimposes an image of the desktop adjacent to the microscope onto the microscope image. The magnification ratio between the microscope image and the desktop image is regulated by a sliding sleeve (with the +V and V- markings). The desktop image is focused with the chrome knurled ring on the distal end of the tube. There is a swing-out filter holder in which a neutral density filter may be placed to assist in balancing the illumination (neutral density filters are not included).
The tube has a magnification factor of 1.25x. The optics in the tube are perfect – no delamination and no blemishes in the surface. Cosmetically the tube is in excellent condition showing some minor signs of use – most notably in the uneven finish of the distal prism housing (see last photo).
Drawing tubes remain an important device in the microscopists arsenal – often they are very helpful to make drawings of highly complex subjects in which the details of interest are otherwise obscured. They are also very useful during video microscopy if you wish to superimpose some sort of readout on the image while recording some dynamic event.
BMI Surplus, Inc. is your best resource for microscopes and microscope components. We will work with you individually to find the perfect microscope for your application. For the most competitive pricing contact us by phone or click the purple �Ask us a question�� link above. We look forward to working with you!
***MPN Drawing Tube
***OEM Wild
***SKU*** 20009
Additional information
Additional information
| Weight | 2.1 lbs |
|---|---|
| Dimensions | 12 × 4 × 3 in |
