P
OCKET
R
EFERENCE
G
UIDE
— 30
Replacing the Batteries
To replace the batteries, slide open the
battery door (at top backside of unit) and
replace with new batteries. Make sure the
batteries are facing positive side up.
Reset Key
If your calculator should ever “lock up,”
press Reset — a small hole located to the
left of the
O
key — to perform a total
reset.
4020PRG-E-A 6/16/04 8:23 AM Page 30
Summary of Contents for Measure Master Pro 4020
Page 1: ...MEASURE MASTER PRO FEET INCH FRACTION and METRIC CALCULATOR Model 4020 Pocket Reference Guide...
Page 32: ...POCKET REFERENCE GUIDE 31 Area Formulas APPENDIX B...
Page 33: ...POCKET REFERENCE GUIDE 32 Volume Formulas...
Page 38: ...POCKET REFERENCE GUIDE 37...
Page 39: ...POCKET REFERENCE GUIDE 38...