INSIZE 3210 Series High-Precision Outside Micrometer Spiral Bit Pre-Drill to Correct Tap Size

Pre-Drill to Correct Tap Size - Use the correct tap drill diameter for the thread pitch being cut

0-180° Protractor Head - Sets and checks angles across a full 180° range

Zero Against the Standard - Verify zero on the setting standard before measuring

Clear Chips Regularly - Reverse periodically to break and clear chips in deep or blind holes

and precision-ground surfaces within the 25–50 mm range

INSIZE 3210 Series High-Precision Outside Micrometer Spiral Bit Pre-Drill to Correct Tap SizeINSIZE 3210 Series High Precision Outside Micrometer 1 micron (0. 001mm) graduation outside micrometer to DIN 863 for high precision OD measurement, with carbide measuring faces and ratchet stop. Features 1 Micron Graduation 0. 001mm graduation for high precision outside diameter measurement DIN 863 Compliant Meets the recognised DIN 863 dimensional standard Carbide Measuring Faces Hardened carbide anvil and spindle faces resist wear Ratchet Stop