HP 16554A Programmer's Manual page 153

Query MACHine{1|2}:SCHart:VAXis?
The VAXis query returns the current vertical axis label and scaling.
Returned Format
[:MACHine{1|2}:SCHart:VAXis] <label_name>,<low_value>,
<high_value><NL>
Example
OUTPUT XXX;":MACHINE1:SCHART:VAXIS?"
SCHart Subsystem
VAXis
9–7