Product name:

Angle leveling ruler

Product model: 500-1500mm

Product origin: China

Description:

Made according to standard JB/T7977-99, while the work face adopts scraping processing. It is used for measuring the straightness and flatness of workpieces as well as the inspection and maintenance of guideways. There are two types as protruding and concave. In view of angle types, there are 45°, 55°, 60°, 90°, 120°.

Type (mm) Straightness and flatness

of working surface α grade of the working  

angle 

Precision grade (μm)

1 2 1 2

   Protruding 45°, 55°, 60°, 90°, 120° × 500 6 12 ± 1 ± 1.5

   Concave   45°, 55°, 60°, 90°, 120° × 500 6 12 ± 1 ± 1.5

   Protruding 45°, 55°, 60°, 90°, 120° × 750 8 15 ± 1 ± 1.5

   Concave   45°, 55°, 60°, 90°, 120° × 750 8 15 ± 1 ± 1.5

   Protruding 45°, 55°, 60°, 90°, 120° × 1000 9 18 ± 1 ± 1.5

   Concave   45°, 55°, 60°, 90°, 120° × 1000 9 18 ± 1 ± 1.5

   Protruding 45°, 55°, 60°, 90°, 120° × 1500 15 30 ± 1 ± 1.5

   Concave   45°, 55°, 60°, 90°, 120° × 1500 15 30 ± 1 ± 1.5