Starrett 445DZ-12RL Mechanical Depth Micrometer 0-12" Range 6" Base 12 Rods

The Starrett 445DZ-12RL is a professional-grade mechanical depth micrometer designed for accurately measuring the depths of holes, slots, shoulders, and projections.

The 445DZ-12RL features Starrett's combination ratchet and speeder thimble, which provides consistent, uniform measuring pressure while allowing faster spindle travel during setup — reducing operator fatigue and improving repeatability. The ring-type knurled lock nut secures the reading quickly and reliably once the measurement is taken. The wide 6" base provides a stable, flat reference surface for accurate seating across larger bores or slots.

Key Features:

• Measuring Range: 0–12" (using 12 interchangeable 1" increment rods)
• Graduation: 0.001"
• Micrometer Head Accuracy: ±0.0001"
• Rod Accuracy: ±0.0002"
• Base Length: 6" (150mm)
• Rod Diameter: 5/32" (4mm)
• Lock Nut Type: Ring-type knurled for quick, positive locking
• Thimble Type: Combination ratchet and speeder
• Reading Surface: Satin chrome finish — glare-free and rust-resistant
• Number of Rods Included: 12
• EDP: 67119
• Made in USA

The satin chrome barrel and thimble provide a glare-free reading surface that is easy on the eyes during extended use and resists corrosion in shop environments. The complete set includes the micrometer head, all 12 measuring rods, and a protective carrying case to keep components organized and damage-free.