Calculated Industries 5070-A User Guide - Manual (Page 19)

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PREFERENCE SETTINGS
Press , then  to access the Preferences menu. Continue
pressing  to toggle through different Preferences. Press  or 
keys to toggle between options of the different Preferences. Press

to exit Preferences. Your calculator will keep your Preference
Settings until a Full Reset alters your settings to the default values
(see appendix for more information).
KeysTRoKe DIsPlay


(Prefs)
(NEC Code) 2011

1996

1999
 2002

2005
 2008

(repeats options) 2011
Second press of  :
(Ambient Temperature Units) aMbº 30. ºC*
 aMbº 86. ºC*
  (repeats options) aMbº 30. ºC*
* These values will differ if you have changed the Ambient Temperature.
Third press of  :
(Length Units) feeT 1.
 MeT 1.
 (repeats options) feeT 1.