Message:

<p>[QUOTE=&quot;springfld.arsenal, post: 33010, member: 54&quot;]M1A indicates to me it was made for military use-M1A being the first model of any particular military-designated item, with some modifications because the first one, &quot;M1&quot; either didn&#039;t work or killed its operators, something like that.&nbsp; This may be for Morse code training or whatever, the operator had to key the letters presented before the next group popped up, and the timing was controlled by the instructor or was set in the machine at the factory per contract specs.&nbsp; If military and perhaps WWII, forget psychological research, it was for something more basic like communications.[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in