56 — Construction Master IV
Battery & Auto Shut-Off
Your calculator is powered by a single
3-Volt Lithium CR-2032 battery. This
should last upwards of 800 hours of
actual use (1 year plus for most peo-
ple). Should the display become very
dim or erratic, replace the battery.
*
Your calculator is designed to shut
itself off after about 8-12 minutes of
non-use.
Default Values
After a Full Reset/All-Clear, the cal-
culator will return to the following
settings:
Setting Imperial Metric
Stair Riser Height 7-1/2 Inch 185 mm
Raked Wall o.c. 16 Inch 600 mm
Jack o.c. 16 Inch 600 mm
Irregular Jack o.c. 16 Inch 600 mm
Weight per Vol. 1.5 Tons/Yd3 1775 kg/M3
Fractional Setting 1/16 1/16
Fractional Mode Normal Normal
* WARNING: Please use caution when disposing of
your old batteries as they contain hazardous chemi-
cals.
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