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Here at the Museum of Science in Boston we developed the circular slide 
tray and it has it's advantages and disadvantages. The advantages are 
that it holds up to 12 specimens & label copy, was designed with 
accessibility mind and is easily maintained once set up. The 
disadvantage is that the slots for mounting are round and slides need to 
be cut down to fit (round hole, square peg). Also, the slots are in a 
fixed position so the slides need to be perfectly aligned with the lens 
or it won't work right. I've seen several variations of the linear slide 
holder that allow the slides to move back and forth and up and down. The 
disadvantage is the number of slides you can put on the linear mechanism 
(4 - 6). Having no trays allows you to put unlimited amount of slides 
out, but the slides have a tendency to break or disappear.
Good Luck,
Dan

Diederick, Laura wrote:
> ISEN-ASTC-L is a service of the Association of Science-Technology Centers
> Incorporated, a worldwide network of science museums and related institutions.
> *****************************************************************************
>
> Hi Everyone! 
>
>  
>
> We are preparing to install a Wentzscope in our public gallery, but have
> not decided on a design for a specimen tray. I have seen sliding trays,
> rotating trays, and scopes with no trays at all. I'd appreciate any and
> all feedback from those of you who have experience with Wentzscopes -
> what worked/did not work, what you wish you had tried, etc.  We already
> have the scope mounted to a cabinet, so I'm just looking for advice on
> how best to display specimens for public in a (relatively) high traffic
> area.
>
>  
>
> Thank you!
>
> Laura
>
>  
>
> Laura Diederick
>
> Education Specialist
>
> Smithsonian Marine Station
>
> Fort Pierce, Florida 
>
>  
>
> 772.465.3271  phone
>
> 772.465.3237  fax
>
>  
>
> www.sms.si.edu/SMEE
>
>  
>
>  
>
>
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