The L.S. Starrett Company No. 445 Depth Micrometer is a precision measuring instrument used to determine depths in holes, slots, and recesses. It features a 0–4" measuring range and a 4" base, with a 0.001" graduation that yields fine, repeatable readings. Made by Starrett, the No. 445 is well-suited for metalworking and inspection applications where accurate depth measurements are required.
