This vintage Faber-Castell slide rule is a precision engineering instrument that has stood the test of time. Made in Germany from high-quality plastic, it remains in excellent working order and is a valuable addition to any scientific collection. The slide rule is marked with the model number 1/87 K1e A1 and dates from the period between 1951 and the present day.

The slide rule is designed for use in engineering and surveying applications and is a superb example of German precision engineering. It is a highly sought-after item for collectors of scientific memorabilia, particularly those with an interest in slide rules. This Faber-Castell slide rule is a must-have for anyone looking to add a rare and valuable piece to their collection.