[volt-nuts] Voltage standard spotted for sale, 4410

[ben]

Hello all,   spotted for sale on eBay is a Guildline 4410 zener voltage 
standard, asking US$995. Outputs are 4 of 10V, and 4 of 1.018V. Comparable 
to the Datron 4911. Typical drift I noticed from using another unit 8 years 
ago was 1ppm per year. I have a similar unit here manufactured by 
Statronics (the OEM for Guildline, I think), however I do not have a  
manual sorry.  If anyone does have a manual for this unit I love like a 
copy - thanks. Of interest to me; the ebay description describes the 1.018V 
C output is non working - which is also the same problem with my unit. I 
measured my 1k dividing resistor on my 1.018V C output is open circuit.  
Cheerio, ben.