SPI 13-687-9 6/8/12in Blade 5 Min Accuracy Universal Bevel Protractor
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The SPI 13-687-9 is a new universal bevel protractor set with a 360° measurement range and a vernier scale graduated in 1° main scale divisions with 5-minute (5') vernier accuracy, resolving angles to 1/12 of a degree. The set includes three interchangeable hardened steel blades — 6 in, 8 in, and 12 in — as well as an acute-angle attachment (squarette), all stored in a fitted molded carrying case as shown in the photos; blade lengths are confirmed directly from the product labeling visible on the box ("WITH 6", 8" & 12" BLADE"). The dial body features a knurled locking knob and fine-adjustment mechanism for precise blade positioning, and the graduated dial ring is chrome-finished for readability; this instrument is suited for layout, inspection, and angle-transfer work in tool rooms, machine shops, and quality control applications.
Product Specifications
| Brand | SPI |
| MPN | 13-687-9 |
| Instrument Type | Universal Bevel Protractor |
| Measurement Range | 0°–360° |
| Main Scale Graduation | 1° |
| Vernier Accuracy | 5 minutes (5') |
| Blade Lengths Included | 6 in, 8 in, 12 in |
| Acute Angle Attachment | Included (squarette) |
| Blade Material | Hardened steel |
| Case Included | Yes, fitted molded case |
| Condition | New |
| Country of Manufacture | India |