Feature: 1. This angle V block features high accuracy and is easy to operate and high‑efficiency. 2. Widely used for drilling, milling and setup applications on milling machine, planer and others. 3. Made of premium tool steel quenched nickel plating, surface hardened, sturdy and durable. 4. Clear graduations, etched graduations, very clear and not easy to fade away. 5. Adjust the tightness, the angle can be adjusted steplessly according to the cursor indication, and the nut can be tightened. Specification: Item Type: Micro Angle Gauge Material: Tool Steel Quenched Nickel Plating Color: As shown in the picture Product Overall Size: Approx.75x36x24mm/2.95x1.42x0.94in Adjuster Size: Approx.22x66x4mm/0.87x2.6x0.16in Weight: Approx.438g/15.4oz Measurement Accuracy: ±0.01mm Application: Use adjustable angle gauges for tool setting, scribing or other fixtures to process the workpiece after clamping the workpiece on milling machines, planers, grinders, and drilling machines, such as machining bevels, drilling oblique holes, etc. How to Use: (1). Loosen the screw, pull the V-shaped block and rotate it along the guide rail on the base to find the target angle. (2). Using the principle of the cursor to read, the division on the main scale is 1°, and the scale of the vernier is 10'. When the “0” line on the cursor is aligned with the “0” line on the main scale, it means that the measurement surface A is parallel to the reference surface, and the reference surface B is perpendicular to the reference surface. ① When the cursor "0" line is to the right of the main scale "0" line, the degree is read out with the cursor "0" line, and the score is read out with the scale to the right of the cursor "0" line (the reading method is the same as that of the vernier caliper). Degrees (°) and minutes (′) indicate that the A and B measuring surfaces have rotated the angle counterclockwise. ②When the cursor "0" line is to the left of the main scale "0" line, the degree is still read out with the cursor "0" line, and the score is read out with the scale to the left of the cursor "0" line. Reading degree (°), minute (′) said A and B measure the angle that the surface has turned clockwise. ③After the angle is adjusted to the target value, tighten it to tighten the V-shaped block and the base. Main technical indicators: (1) When the measurement surface A is parallel to the base surface and the measurement surface B is perpendicular to the reference surface, the misalignment of the vernier “0” line and the main scale “0” line is greater than 3′, and the two 11° lines between the two ends of the vernier and the main scale are not coincident. The coincidence degree is not more than 5′; on the contrary, after tightening the screws to align the 0° line of the main scale with the “0” line of the vernier, the parallelism between the measurement surface A and the reference surface is not greater than 0.01mm, and the perpendicularity between the measurement surface B and the reference surface is also not more than 0.01mm. (2)In the fixed state, the indication error of the adjustable angle gauge is not more than ±10′. . Package List: 1 x Micro Angle Gauge1 x Adjuster Note: 1. Please allow 1‑2in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.