Instruction manual
42
Auto Save 
When power is turned off, ProScale remembers the current 
measurement and current mode of operation. When ProScale is turned 
back on, the user can continue where they left off. It's not necessary to 
zero the reading or change the mode. Also, keystrokes are not 
recognized when  power is off, so accidental keystrokes will not damage 
the stored information. 
Locking the Keypad 
The keypad may be locked so the current settings can't be accidentally 
changed by depressing the ZERO, PLUS or MINUS keys. To lock the 
keypad proceed as follows: 
1.  While depressing and holding the ON/OFF key, momentarily press 
the MODE key. 
2.  Release the MODE key and then the ON/OFF key. The display 
should now indicate “LOCK” in the upper left corner. 
3.  Use the same procedure to UNLOCK the keypad. 
Note:  Locking the keypad may cause the PLUS and MINUS keys to 
function differently. (See “Pattern Adjustment”.) The zero key 
will not function when the display is locked. 
Pattern Adjustment (Battery Powered Display Only) 
Whenever the readhead is disconnected from its power source, or the 
display is turned off, and the readhead is moved over a pattern joint, the 
displayed reading may be one or more patterns (+ 430mm) in error when 
power is restored. This may also occur if the readhead is moved too 
quickly in Model 150/250 systems. 
To correct the error, place the digital display in ABS LOCK mode and 
use the PLUS or MINUS keys to increment or decrement the reading 
until the proper reading is displayed. Using this procedure will result in 
NO LOSS OF ACCURACY to the system. 










