Basic Info.
Product Description
Granite parallel ruler
used to test the straightness and flatness of workpiece and equipment installing.
we have standard size in stock .
made according to standard jb/t7977-99, material ht250, working surface made by skiving or precise rubbing. used to test the straightness and flatness of workpiece and equipment installing. working environment temperature (20 ± 5) .
type (mm) straightness and flatnessof working surface parallelism between working surfaces
precision grade ( µm)
0 1 2 0 1 2
500 × 35 3 6 12 4.5 9 18
750 × 40 4 8 15 6 12 25
1000 × 50 5 10 20 7.5 15 30
1250 × 50 12 24 18 36
1600 × 70 15 30 20 40
2000 × 80 18 36 27 54
2500 × 80 44 65
3000 × 100 52 78
3500 × 100 60 90
4000 × 100 68 100
your inquiry will be highly appreciated.hope this will be a nice start of our long businese cooperation.
Company Profile
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Business Type:
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We botou sino machinery factory specialize in the cast iron and granite machinery and measuring instruments, our main products include cast iron plate, granite (marble) plate, mechanical components, gauge (ruler, gauge, plug and ring gauges, test sticks, deflection tester), v-shaped iron, square box (side drum), levelling ruler(cast iron or granite ), pad iron and some other testing and measuring tools. |
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Comapany: |
Botou xinnuo machinery factory |
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Address: |
Botou city industrial development zone |
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City: |
Canghzou |
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Zip/Postal: |
062150 |
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State: |
Hebei |
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Country: |
China |
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