42 lever

He extended his arm, aimed at the scenery outside the window, and felt an unprecedented ease. For this was the first the he had created a truly "modern" weapon since crossing into this world.

It was a weapon he was familiar with, a weapon he understood! The ones before, including the needle-gun he had mass-produced, were merely hazy memories in his mind and data calculated by the system.

Only this Left-Wheel Handgun in front of him was designed in a way he was familiar with, was operated in a way he was familiar with!

After fiddling with his new secret weapon for a while, Tang Mo began to lower his head to the desk, drafting designs for new machinery.

He needed to quickly get steam engines to power more equipment, to ensure that the entire factory could operate at night—therefore, he needed a new type of energy: "electricity".