The Goldilocks Screw Gauge™ is a precision-milled stainless steel tool with six graduated steps, designed to help identify the correct screw diameter for optical frames.
Features six "steps" of increasing diameter to fit the screw barrel snugly
Color-coded chart aligns with most major screw suppliers for easy identification
A customizable chart is included for adjusting to alternative color codes
Made from durable stainless steel for long-lasting use
