Boettger & Wittig Watch and Tool Demagnetizer (c. 1902) Models on Display:Boettger & Wittig Watch and Tool Demagnetizer 150 today)

150 today)

paired with the first-generation ImageWriter and the initial software suite from Microsoft

including a speed adjustment knob

was permanently closed in 2003

which mechanically turned internal wheels to reveal the final math answer in a small plastic window

Boettger & Wittig Watch and Tool Demagnetizer (c. 1902) Models on Display:Boettger & Wittig Watch and Tool Demagnetizer 150 today)Boettger & Wittig Watch and Tool Demagnetizer The Boettger & Wittig Demagnetizer, patented in 1902, was an essential technological invention designed to protect the mechanical watches of the early electrical age. During the late 19th and early 20th centuries, the rapid rise of factory electric motors and early appliances created invisible magnetic fields that frequently "magnetized" the delicate steel springs inside pocket watches. When this happened,