Young Jacob demonstrates the durable periscope in its busy museum environment.

This is the the e-mail I recieved from David Baxendell about a durable periscope made from roofing downspout and connectors.

Hi Slater,
I enjoyed your site and came away with a few ideas, although I need to
adapt somewhat as I am a teacher of 3-4 yr. olds. I am passionate about
introducing children to science concepts as early as possible and have
been making and demonstrating with them for 25 years. I came up with the
following idea for a periscope while trying to find something sturdy
enough for constant unsupervised use with them (as all my demonstration
equipment has to be!) Let them play with it for a while and then field
the questions.

1 length of rectangular section downpipe.
2 right angle connectors for above.
2 45 degree triangular wooden blocks to fit in the connectors
I used hot melt glue to attach mirrors to wooden blocks, then drilled
and screwed the blocks inside the connectors and attached them to the
ends of the pipe facing opposite directions. The connectors are a tight
fit and I secured them with a single self-tapping screw to allow easy
repair work while preventing children from dismembering the item and
leaving the various parts scattered in different areas (if it *can*
happen, it *will*, eventually!)
I spiced up the main body with an odd piece of self-adhesive book covering. I created this during a session with children helping me and often take
it apart to show them how it is made. Attached is a photo of it in use
(a bit out of focus, sorry). This one has had about 10 years of hard use
and still going strong.

Keep up the good work

David Baxendell
New Zealand

You can write with questions and comments to Mr. Baxendell directly. I have written it out to foil spambots. Replace the at with @.

David Baxendell []

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