Straight Edges

Pioneers in the industry, we offer engineer''s steel straight edges, cast iron straight edges and prismatic straight edges from India.

Engineer''s Steel Straight Edges

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Usage/Application	Used for checking straightness and marking purposes
Brand	Luthra
Dimensions LXBXH mm	300 X 35 X 8
Straightness um	12
Parallelism um	24

Steel straight edges are made using high quality steel and are available in hardened and unhardened form. Our steel straight edges are hand scrapped or lapped to achieve the desired accuracy as per standards. Light in weight, design of these straight edges make them ideal to use in various industries such as Glass, Fabrication and windmill. The Engineer’s steel straight edges of bigger size are provided with milling slots to reduce weight. Our Steel Straight edges are supplied with computerized calibration certificate traceable to National Physical Laboratory (NPL, Govt Of India ) New Delhi. We provide unmatched range of Engineer's Steel Straight Edges, in a wide range to our esteemed clients. Our range of engineer's steel straight edges is highly demanded in international market for its attributes like high tensile strength, durability and light weight and these edges are apt for numerous industries like Glass, fabrication and windmill etc. Clients can avail this engineer's steel straight edges at reasonable price in the market.

Specifications:

Dimensions L X B X H mm	Straightness Microns um	Parallelism Microns um
300 x 35 x 8	12	24
450 x 35 x 8	12	24
600 x 50 x 8	15	30
1000x 50 x 8	21	42
1200 x 55 x 10	25	50
1500 x 65 x 12	29	58
2000 x 65 x 12	37	74
2500 x 65 x 12	46	92
3000 x 85 x 18	54	108
4000 x 100 x 20	71	142
5000 x 100 x 20	87	174
6000 x 120 x 20	100	200

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Cast Iron Straight Edges

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Brand	Luthra
Length of Straight Edge	500 mm
Width of Working Surfaces	35 mm
Overall Height	100 mm
Flange Thickness	12 mm

Cast Iron Straight Edges are widely used for erection, commissioning and leveling purpose. I- section straight edges is used to check the surface flatness of large precision area such as surface tables and machine tables etc. Cast iron straight edges are also used for blue matching during hand scrapping operations .I-section straight edges have wide and parallel working surface for application of spirit level. Luthra I –Section straight Edge are made as per IS 5268:1991 Grade-1. The bow shaped type is additionally featured with studs at the bottom for perfect balance and the hand scrapped surface is provided for comfortable handling which makes the product best among the others.

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Prismatic Straight Edges

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Product Details:

Usage/Application	Used for checking angle and flatness of machine tools dovetailed guide ways, fixtures and slide
Brand	Luthra
Length	500, 750, 1000, 1250, 1500, 2000mm
Material	Cast Iron

We offer quality Prismatic Straight Edges that are used for checking angle and flatness of machine tools dovetailed guide ways, fixtures and slides. Triangular straight edge, two faces are scrapped and angle between the scrapped faces (30 or 45 or 60 Degree) is accurately processed. The third side is painted and recessed for weight reduction in the bigger sizes.

Some of its unique features are:

Luthra cast iron Prismatic Straight Edges are made of good quality closed grain cast iron strictly as per IS 210:1993 confirming to Grade FG-220. Castings are stress relieved either by natural ageing or by artificial seasoning.
Working surfaces are finished by hand scrapping to desired accuracy as per IS 8823:1978.
Provided with suitable M.S. handles on both end for easy lifting.
Offered in sizes with various working angles between working faces as shown in the table.
Prismatic Straight edges are supplied with computerised calibration certificate traceable to National Physical Laboratory (NPL, Govt of India) New Delhi

Standard Size and accuracy of Luthra Triangular Straight Edges as per IS : 8823-1978, Grade-1

Length	Angle between working Surfaces (in Degrees)			Tolerance on Flatness of Working Surfaces
	30	45	60
Millimetre mm	Width of working surfaces mm			Microns um
500	70	70	60	4
750	90	90	80	6
1000	110	110	100	8
1250	130	130	110	13
1500	130	130	110	13
2000	130	130	110	16