SPI 3-Point Hole-Mike Inside Micrometer, 4.0 – 4.5mm
14-320-6

4 to 4.5mm, 20mm Gage Depth, Mechanical Inside Hole Micrometer

0.001mm Graduation, 0.002mm Accuracy, Ratchet Stop Thimble

Features:

• Three point internal micrometer for precise direct measurement of bore diameters
• Self aligning and self centering
• Carbide measuring anvils
• Suitable to measure to within .050″ of bottom of blind hole, up to 4″ capacity
• Feelers taper toward the back for positive reading of the front edge
• Ratchet stop provides uniform measuring pressure and assures highest reading accuracy

Specifications:

Item Number 14-320-6 Type Hole Minimum Measurement (mm) 4.00 Maximum Measurement (mm) 4.50 Graduation (mm) 0.0010 Thimble Type Ratchet Stop Accuracy (mm) 0.0020 Gage Depth (mm) 20.00 Number of Contact Points 3 Number of Extension Rods 0 Number of Setting Rings Included 0 Digital Counter No

See all SPI 3-Point Hole-Mike Inside Micrometers & Sets