I have a Takahashi collimating Scope which is surplus to my needs so offering here for sale. Used for collimating RC type cassegrain OTAs. I have provided links below to the user manual and a link to a page on the Alluna optics site that talks about how it can be used for this purpose.
New price is $369 and I am listing it here for $200 + postage. I will include the M42 adapter as shown in the photo. I did buy this new but there was no printed manual included with the scope. No problems though as it can be easily downloaded at the link below.
Link to user manual here.
Link to page on Alluna site here.