| Year of introduction | c. 2004? |
| Function | Construction |
| Model Number | 4220 |
| Power | 1 CR-2016 battery |
| Original Price | $79.95 |
| Photo credit | Mark Bollman→ |
ConcreteCalc (4220)
| Year of introduction | c. 2004? |
| Function | Construction |
| Model Number | 4220 |
| Power | 1 CR-2016 battery |
| Original Price | $79.95 |
| Photo credit | Mark Bollman→ |
The 4220 ConcreteCalc repreents a
slight case redesign from the 4215 model,
and separates this concrete and masonry calculator line from the
Construction Master series. It would be upgraded further to the
ConcreteCalc Pro in 2006.
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