93 The following pages show our varied line of depth micrometers. These are available with base lengths from 2-1/2-6 (63.5-150mm) and can measure depths up to 9 (225mm). They are available in electronic, mechanical digital and regular readouts. They are also available with rotating or non-rotating blades. The purpose of these tools is to measure the depth of holes, slots, shoulders and projections quickly and easily to .001 or 0.01mm. All heads used in our depth micrometers are accurate to ±.0001 or ±0.002mm. Unless otherwise noted under the individual tools, they all have these features: Ÿ A base shape design that will automatically position the fingers so that the base is easily held in place for measuring stability Ÿ All precision screws are ground and lapped Ÿ All bases and rods are hardened, ground, and lapped for permanent accuracy Ÿ All reading surfaces have a satin chrome finish that resists rust and provides a no-glare background for the sharp lines and figures Ÿ All measuring rods are adjustable Ÿ Quick and easy adjustment Ÿ Starrett workmanship DEPTH MICROMETERS

94 Electronic Micrometer Depth Gage (with output) No. 749 0-12 (0-300mm) The Starrett No. 749 electronic depth micrometer has a wide 0-6 (0-150mm) range for measuring the depth of most holes, slots, shoulders and projections. The 4 (100mm) base is hardened, ground, and lapped for long-lasting precision. Readability Features Ÿ Large, right-sized, high-contrast LCD digital readout Ÿ Resolution – .0001 (0.001mm) Ÿ Inch or millimeter graduations standard Ÿ No-glare black wrinkle finish frame Ÿ No-glare satin chrome finish on thimble and sleeve Ease-of-Handling Features Ÿ Ring-type knurled lock nut...

95 Digital Micrometer Depth Gages No. 446 Series 0-6 No. 446M Series 0-150mm These are the Starrett mechanical digital depth micrometers – simple to use even by the inexperienced. Besides those listed on the lead page of this section, this tool has these additional features: Ÿ Clear, easily read white numbers on black background reduce errors Ÿ No-glare black finish on the frame Ÿ .001 or 0.01mm is read directly from the counter Ÿ Ring-type knurled lock nut for quick and sure locking Ÿ Combination ratchet and speeder for uniform pressure and quicker adjustment Ÿ Hardened, ground, and lapped base...

96 Graduation – .001 Range Base Length No. Rods Rod Size Catalog No. EDP No. 0-3 2-1/2 3 449AZ-3R 52318 0-6 2-1/2 6 .045 x 1/8 449AZ-6R 52320 0-3 4 3 449BZ-3R 52322 0-6 4 6 449BZ-6R 52324 Graduation – 0.01mm 0-75mm 63.5mm 3 449MAZ-75R 56636 0-150mm 63.5mm 6 1.2 x 3.2mm 449MAZ-150R 56637 0-75mm 100mm 3 449MBZ-75R 56638 0-150mm 100mm 6 449MBZ-150R 56639 Rods Only For 449 Series (Inch) For 449M Series (Millimeter) Size Part No. EDP No. Size Part No. EDP No. 0-1 PT99115 71838 0-25mm PT99306 72476 1-2 PT99116 71839 25-50mm PT99307 72477 2-3 PT99117 71840 50-75mm PT99308 72478 3-4 PT99118 71841 75-100mm...

97 No. 440 Series 0-9 No. 440M Series 0-225mm No. 445 Series 0-12 No. 445M Series 0-225mm The depths of holes, slots, shoulders and projections can be measured to .001 or 0.01mm with these fine tools. The No. 440 gages are furnished with a 2-1/2 (63.5mm) base and 1/8 (3.2mm) diameter measuring rods.* The No. 445 gages are furnished with choices of 3 (75mm), 4 (100mm), and 6 (150mm) bases and have 5/32 (4mm) diameter measuring rods.* Besides the features listed on the lead page of this section, there are these additional features: Ÿ The combination ratchet and speeder for uniform pressure and...