ElectriCalc Pro (Model 5055)

| Year of introduction | 1999 |
| Function | Electrical |
| Model Number | 5055 |
| Power | 1 3 V lithium battery |
| Original Price | $99.95 |
| Photo credit | Mark Bollman→ |
The ElectriCalc Pro represents the merger of the ElectriCalc and Construction Master calculator lines. With this model, CI electrical calculators were designed with a removable and upgradeable ROM chip and may be updated to reflect changes to the National Electrical Code. This model was shipped compliant with the 1999 NEC--a later version (model 5060) came out in 2001 and was current with the 2002 NEC when shipped.
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