Sonipat, Haryana
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Granite Square-C.I Right Angle

We specialize in offering a wide variety of granite square and C.I. right angles. These granite square and cast iron right angles are available in different angle ranging from 45 to 90 degrees. We make use of high grade cast iron to design these precision tools.

Our range of Granite square and C.I right angle are is used for measuring the exact accuracy in terms of squareness and flatness respectively.

Our range includes granite square, precision granite square, cast iron right angle, granite block master and granite square triangular.


Granite block master are made from selected black granite stone. Master squares are ideal for inspecting the X, Y and Z axes of machine tools. Our Granite block masters are very stable and rigid, providing the ultimate in squareness references. Our master squares have 5 finished faces (1 large face and 4 edges) finished flat, square and parallel to Grade–0 accuracy. All six faces can be finished upon request.

Specifications

Size
(mm)
Accuracy
(um)
300 x 300 x 50 5
400 x 400 x 63 6
630 x 630 x 80 8

*Other Sizes On Request
Granite square are made of selected black granite. These triangular shaped granite squares are ideal for checking X, Y and Z axes of machine bases or parts. They are very rigid and stable. The two face master angle has two narrow perpendicular edges finished flat and square.

Specifications

Size
(mm)
Accuracy
(um)
300 x 200 x 63 5
400 x 250 x 63 6
500 x 300 x 80 6
600 x 400 x 100 8
1000 x 600 x 100 10

*Other Sizes On Request
Granite comparator stands are made of black granite and are precision lapped to grade – 0 accuracy. Heavy duty vertical post and adjustable gaging bracket for maximum stability and durability.

Specifications

Model
No
Reference
Surface
mm
Measuring
Height
mm
Throat
Depth
mm
Post
Diameter
mm
Gaging
Bracket
L – 1 150 x 100 100 65 25 Plain
L – 2 150 x 100 100 65 25 Fine Adj.
L – 3 250 x 150 150 150 25 Plain
L – 4 250 x 150 150 170 25 Double Shaft
L – 5 250 x 150 150 95 25 Fine Adj.
L – 6 300 x 200 200 150 28 Plain
L – 7 300 x 200 200 220 28 Double Shaft
L – 8 300 x 200 200 125 28 Fine Adj.
L- 9 300 x 300 250 150 28 Plain
L- 10 300 x 300 250 220 28 Double Shaft
L – 11 300 x 300 250 125 28 Fine Adj.

*Other Sizes On Request
Granite parallels are made from good quality black granite. These granite parallels are precision lapped to achieve desired accuracy. 

Standard sizes and accuracy of Luthra Granite Parallels

Sizes
L X B X H
mm
Accuracy Microns
um
Straightness Parallelism
100 x 40 x 20 +/- 1.25 +/- 1.25
150 x 50 x 25 +/- 2.5 +/- 2.5
150 x 80 x 40 +/- 2.5 +/- 2.5
200 x 75 x 50 +/- 4.0 +/- 4.0
200 x 100 x 50 +/- 4.0 +/- 4.0
250 x 100 x 50 +/- 4.0 +/- 4.0
300 x 100 x 50 +/- 5.0 +/- 5.0

*Other Sizes On Request
 

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Luthra Engineering Works

Gaurav Luthra (Proprietor)
Luthra House, Delhi Road
Sonipat - 131001
Haryana, India
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