[time-nuts] Thermal time constant

[Matt Osborn]

Jack Smith at Clifton Laboratories built a replacement for the 1502
chart recorders. An early prototype can be seen here:
<http://www.cliftonlaboratories.com/mar_2007.htm>


On Thu, 11 Mar 2010 04:51:00 +0000, Mark Sims <holrum at hotmail.com>
wrote:

>
>Gawd,  tell me about it...   I just got through rebuilding the drive roller in half a dozen Tektronix YT-1 and YT-1S chart recorders for the 1502B/1520C/1503B/1503C TDR's

-- kc0ukk at msosborn dot com