Mr. Pen FD01 2-Line Scientific Calculator
- Calculator Type: Engineering/Scientific
- Display Type: LED
- Power Source: Battery
- Screen Size: 70.9 inches
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A capable two-line scientific calculator at a reasonable function count, best for general coursework rather than exams with strict model requirements. Check your test's approved list before buying if that matters.
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ASIN: B08FSGY3VXModel: FD01Category: Scientific Calculators
Overview
Mr. Pen's scientific calculator runs 240 functions on a two-line display that shows the entry and the calculated result at the same time. It is built for students and engineers who want a straightforward scientific model rather than a graphing one.
The listing carries no model number, which makes it harder to check against a specific class requirement list, so a student should confirm the exact function set with an instructor before an exam. The widescreen 10+2-digit display and hardcover are the more concrete selling points here.
- 10+2 digit widescreen display
- 240 scientific functions
- 2-line entry and result view
- Protective hardcover included
Who it's for
Fits a student or working engineer who wants a two-line scientific calculator for everyday equations rather than graphing or programming. Less suited to anyone who needs a calculator matched to a specific approved model number for a standardized test.
Pros and cons
- Two-line display shows entry and result together
- 240 scientific functions for general coursework
- Hardcover guards screen from scratches
- No model number listed for exam approval checks
- No graphing functions included
Performance notes
The two-line display keeps the typed expression visible above the result, so a long equation can be checked before it is solved rather than after. A protective hardcover folds over the keypad to guard the screen and buttons between uses.
Specifications
| Brand | Mr. Pen |
|---|---|
| Model | FD01 |
| Dimensions & fit | |
| Screen Size | 70.9 inches |
| Item Dimensions L X W | 5.8 × 5 inches |
| Power & efficiency | |
| Power Source | Battery |
| Construction & materials | |
| Enclosure Material | Hardcover |
| Color | Black |
| Compatibility & installation | |
| Compatible Devices | Most devices with keyboard or touchscreen input and screen display |
| Included components | |
| Unit Count | 1 |
| Warranty & support | |
| Warranty Description | Life-Time |
| Other details | |
| Calculator Type | Engineering/Scientific |
| Display Type | LED |
| Number Of Items | 1 |
| Mfr Part Number | FD01 |
| Item Highlight | Or Students & Engineers |
Frequently asked questions
Does the Mr. Pen scientific calculator have a two-line display?
Yes, it shows the typed entry and the calculated result on two lines at once.
Is the Mr. Pen scientific calculator approved for standardized tests?
The listing does not give a model number, so check your specific test's approved calculator list before relying on it.
How many functions does the Mr. Pen scientific calculator have?
It runs 240 scientific functions, aimed at students and engineers.