SPI 13-555-8 Electronic Three-Point Internal Micrometer Reading Unit
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This SPI (Swiss Precision Instruments) 13-555-8 is the electronic reading unit for a three-point internal micrometer, used to measure bore diameters. It has an LCD digital display, ON/OFF-SET and ABS/INC-UNIT buttons for zeroing, absolute/incremental mode and unit selection, a knurled ratchet thimble, a plain steel spindle shank, and an IP54-rated housing. This is a reading unit only and does not include measuring heads or extension rods. The photos show it with the SPI operation manual, two open-end spanners, a flat adjusting tab and a battery label, and the manual states a twelve-month warranty against defects in materials and workmanship. Condition is new.
Product Specifications
| Brand | SPI |
| MPN | 13-555-8 |
| Type | Electronic Three-Point Internal Micrometer |
| Configuration | Reading Unit Only |
| Display | Digital LCD |
| Measuring Method | Three-Point Internal |
| IP Rating | IP54 |
| Controls | ON/OFF-SET, ABS/INC-UNIT |
| Measurement Modes | Absolute/Incremental |
| Housing Color | Dark Blue |
| Thimble Type | Knurled Ratchet |
| Manufacturer | Swiss Precision Instruments, Inc. |
| Warranty | 12 Months |
| Included Items | Manual, 2 Spanners, Adjusting Tab, Battery |