[SEL] Bacharach Testor

[FRM8198 at aol.com]

Hi List,
This last weekend I found a Bacharach test set up at a garage  sale.  It is 
an interesting piece of recording equipment.  However, no  instruction manual 
came with the unit.  There is chart identified as "ARCCO  Emco Integrator 
Charts".  I tried a search on Google and I wasn't too  successful.  It has a stylus 
that seems to be controlled by pressure.   It has small metal vertical 
rotating drum on which the stylus rests.  It  also has small pulleys for some type 
of belt drive.
I saw a similar item at a steam related equipment sale several  years ago.  
If I remember correctly, I think this type of test equipment is  used to check 
out the efficiency of a steam engine.  Does anyone know what  I have?  I can 
send pictures to anyone wanting them please let me know.  

Francis Maciel
Santa Maria,  CA