Protector scopes

[Mrs Vampire]

I am in the process of making protectorscopes for the Stuart.

Have done the pistol port ones and most of the two Forward door bits.

I have drawings and have cast up the prisms for both.

[Mrs Vampire]

other bits

[BCA]

A small version of the protectoscope (about 5" wide, 3/4" thick x about 3") was used the M5 Stuart, the M8/M20 armored car as well as the WW2 Canadian Lynx scout Car. These were made by the Standard Products Co (Thermo Plastics Division). They had other obscure uses too. They are a combination of a plexiglass core, thin mirrors and a black plastic protective shell outer. ........ Brian

[Mrs Vampire]

Hi Brian

M3A1 Stuart. I have been unable to source bits so I am making them .

[Ian Fawbert]

Hi Gina,

Might be abit late now, but did you see this post from Steve Greenberg on g503.com?

http://g503.com/forums/viewtopic.php?f=82&t=193757

Cheers,
Ian.

[Mike Cecil]

I see Steve G refers to trying to gluing them together, but the resulting optical qualities were not good. Resin glues tend to have a yellow colour, even when applied very thinly.

When I was training to be a geologist many many moons ago, we had to make our own thin-section rock slides for microscopy. The 'glue' was a thing called Canada Balsam which we used to glue the rock to the glass, then the cover slip to the rock and glass after grinding the face to the desired thickness. Optical qualities were not diminished. I wonder if that has an application here? It was what I was going to experiment with to make the glass vision blocks for the Dingo, but of course, relocating to the USA got in the way of that!

There are probably much more advanced mounting media these days, but microscopy could provide a type that is durable and does not diminish the optical properties of the glass.

Just a thought....

Mike