The Leitz calculator is a practical and versatile tool for everyday use. With an 8-digit LCD display, it provides a clear and easy-to-read output for all calculations. The integrated gross margin function (GPM) allows for simple calculation of profit margins, while the percentage function and square root function offer additional mathematical capabilities. The calculator features a 3-key memory that makes it easy to store and retrieve values. Thanks to its solar and battery operation options, it is both environmentally friendly and reliable, even in low light conditions. A protective cover ensures that the device remains safe and secure when not in use.