SPI 3-Point Hole-Mike Inside Micrometer, 275 – 300mm
14-345-3

275 to 300mm, 140mm 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 14-345-3 Type Hole Minimum Measurement (mm) 275.00 Maximum Measurement (mm) 300.00 Graduation (mm) 0.0010 Thimble Type Ratchet Stop Accuracy (mm) 0.0020 Gage Depth (mm) 140.00 Number of Contact Points 3 Number of Extension Rods 0 Number of Setting Rings Included 0 Digital Counter No

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