SPI 3-Point Hole-Mike Inside Micrometer, 3.600 – 4.000″
10-746-6

3.6 to 4″, 3.54″ Gage Depth, Mechanical Inside Hole Micrometer

0.0002″ Graduation, 0.00025″ 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 10-746-6 Type Hole Minimum Measurement (Decimal Inch) 3.6000 Maximum Measurement (Decimal Inch) 4.0000 Graduation (Decimal Inch) 0.0002 Thimble Type Ratchet Stop Accuracy (Decimal Inch) 0.000250 Gage Depth (Decimal Inch) 3.5400 Maximum Extension Rod Length (Inch) 6 Number of Contact Points 3 Number of Setting Rings Included 0 Digital Counter No

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