Calculator Casio Ms10 10 Digits Mini Desk Type

Casio MS-10B office calculator.
Two kinds of power supply: LR44 battery and solar power.
10-digit, dimensions 29x103x147mm.
Basic functions:
- percentage calculations; margin system
- conversion of 3 currencies
- TAX tax calculations
- independent memory
- thousandth marker
- change of the +/- sign
- indicator of the performed activity
- calculations with a constant