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.