PSN-L Email List Message

Subject: Re: boom angle of horiz seis
From: "steve hammond" shammon1@.............
Date: Wed, 16 Feb 2000 21:31:31 -0800

Hi Ted, well there is proof, the mind does go first...  Now I remember that
you did donate that system to the American School in Tokyo. What year was
that? 93? At least I still remembered it had a knife edge.
Have a good day--
Regards, Steve PSN Aptos, California
-----Original Message-----
From: ted@.......... 
To: PSN-L Mailing List 
Date: Wednesday, February 16, 2000 1:48 PM
Subject: Re: boom angle of horiz seis

>Good memory, Steve!  My original Lehman (long since gone, donated to Yamato
>High School in Japan) used a knife-edge which required perfect adjustment
>in order for the entire knife edge to contact the base.  this adjustment
>was made via the turnbuckle in the middle of the suspension wire.  The
>other newer designs are far superior but it worked well for a long time.
>Regards, Ted
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