Vintage Androck hand-crank egg beater, also commonly referred to as a rotary hand mixer. It is a stainless steel model which was common in mid-20th-century kitchens. Key Features • Manual Operation: It uses a hand-turned crank to rotate two interlocking beaters. • Construction: Made of stainless steel with a plastic (like Bakelite) handle and knob. • Purpose: These tools were designed for whisking eggs, blending batters, and whipping cream without the need for electricity.