Granite Surface Plates Granite surface plates are manufactured using natural black granite stone, quarried from earth in its natural form. These plates are precision lapped to high standards of flatness to achieve accuracy and are used as bases for mounting sophisticated mechanical, electronic and optical gauging systems. Our quality inspectors and engineers put a strict vigilance at all the stages of the production procedure to ensure high quality plates. Further, the final inspection is carried out by a High Precision Computerized Electronic Level made by WYLER OF SWITZERLAND. Our range o

Granite Block Master (Square) 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. This product is 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. Specification:

Cast Iron Comparator Stand Cast Iron comparator stands are made of closed grain graded casting and are hand scrapped to achieve accuracy of grade – 1. Rigid and sturdy base. Serrated and Plain anvil face are hardened and ground finish. High wear resistance. Adjustable support arm of dial indicator

Steel Parallel Steel Parallels are made from high quality steel .These steel parallels are available in hardened and precision ground finish. Standard sizes and accuracy of Luthra Steel Parallel As per IS-4241:1967, Grade 1

Taper Mandrel Taper mandrel are also called as inspection mandrels and are used for checking the alignment of machine spindle axis. These are made of hardened and stabilised steel. Mandrels are provided with properly ground and lapped centres for easy usage and accuracy. In morse tapers, the mandrels are self holding in the socket and in ISO tapers, a tapped hole is provided for fixing the mandrel with a threaded retaining pin. Standard sizes and accuracy of Luthra Taper Mandrel As per IS-2063:1962.

Plain Angle Plate We manufacture and supply a wide range of plain angle plates, which are largely used in various industries for clamping and holding work in vertical position. These plain angle plates are also used as a vertical reference for inspection and tooling purposes such as shaping, planning, milling, grinding, drilling etc. All 6 working faces of our angle plates are hand scrapped to desired accuracy and are square/right angle to each other. Fabricated using high quality closed grain cast iron of Grade FG-220, these angle plates comply with IS 2554:1971 standards. Features :

Granite Straight Edges Luthra Granite straight edges are produced from black granite. These straightedges are used for setting up machine bases by using spirit /electronic level and reference surface. Both the narrow working faces of granite straight edge are parallel and straight as per standards. Standard sizes and accuracy of granite straight edge as per Grade-1

Granite Lapping Plates We are one of the leading suppliers of Granite Lapping plates that are used for accurate hand lapping of material such as nylon, plastics, ceramics and other non ferrous material. These are available in Square and Rectangular sizes and are made up of black granite. Each of the plates has 3 mm wide and 3 mm deep serrations on working surface equally spaced at 25 mm and have lapped surface finish. Our Granite lapping plates are supplied with calibration certificate traceable to National Physical Laboratory (NPL, Govt Of India ) New Delhi. Standard Size and accurac

Granite Comparator Stand 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. Specification

Cast Iron Lapping Plates We provide our clients with qualitative cast iron lapping plates that are used for accurate hand lapping of various materials like nylon, plastics, ceramics and other non ferrous material. These are available in Round and rectangular sizes and have 3 mm wide and 3 mm deep serrations on working surface equally spaced at 25 mm. Our cast iron plates are manufactured using closed grain graded casting as per IS 210:1993 confirming to Grade FG- 220. Cast iron lapping plates are supplied with calibration certificate traceable to National Physical Laboratory (NPL, Govt

Engineer's Steel Straight Edges We provide our clients with Engineer’s Steel straight edges. These are widely used for checking straightness and marking purposes. 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 r

Straight or Parallel Mandrel Straight mandrel are also called as inspection mandrels and are used for checking concentricity, parallelism and true running of components. Mandrel mounted between centres provides a reference straight line joining the two points (centres), so as to check the alignment of the centres. Parallel mandrels are made of hardened and stabilised steel. Mandrels are provided with properly ground and lapped centres for easy usage and accuracy. Standard sizes and accuracy of Luthra Parallel/Straight Mandrel As per IS-2063:1962.

Steel Parallel 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 a

Cast Iron Cubes We provide our clients with quality cast iron cubes that are manufactured using qualitative closed grain cast iron selected strictly as per IS 210:1993. The material procured for designing these cubes confirms to Grade FG-220. Our range of cast iron cubes are used as precision height blocks in standard room, machine shops for setting up machining operations with the help of height gauges as riser blocks to accomplish marking and inspection purposes. These are supplied with calibration certificate traceable to National Physical Laboratory (NPL, Govt. of India) New Delhi. We

Cast Iron Right Angle Cast iron right angles are widely used in various industries as a vertical reference for inspection purposes of components and for checking squareness. C.I Right Angle has bottom and the adjacent square face finished flat and square to each other as well as the two adjacent narrow sides finished flat and square to other two faces and are parallel to each other. Cast iron right angles are made using finest quality closed grain cast iron, confirming to Grade FG-220 and as per IS 210:1993 standards. We supply these right angles with computerised calibration certificate, w

Master Cylinder Cylindrical Squares, used on surface plates, provide one of the most reliable 90° reference standards available in the industry today. Work may be placed against the periphery and sighted for checking squareness / right angle by comparison method. Cylindrical squares are also used for checking the squareness of the vertical axis to the horizontal axis of numerically controlled machining centres. Luthra Cylindrical Squares are made of high quality alloy steel, scientifically heat treated for maximum stability and wear resistance. The periphery is ground between centres strai

Box Angle Plates We specialize in offering qualitative Box angle plates . These are basically used for clamping work for tooling, shaping and milling, wherein, job can be fixed on one of its faces and are rotated in 5 positions without the need of repositioning or disturbing accuracy. Our range of Box angle plates is used in diverse engineering industries where all the parameters such as squareness, flatness and parallelism are required in a single instrument. These parameters are true to each other for effective functioning of the plates.

Granite Square (Triangular) Granite Square are made of selected black granite. These triangular shaped granite square 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. Specification

Slotted Angle Plate We manufacture and supply a wide range of slotted angle plates, which are largely used in various industries for clamping and holding work in vertical position. These slotted angle plates are also used as a vertical reference for inspection and tooling purposes such as shaping, planning, milling, grinding, drilling etc. All 6 working faces of our angle plates are hand scrapped to desired accuracy and are square/right angle to each other. Fabricated using high quality closed grain cast iron of Grade FG-220, these angle plates comply with IS 2554:1971 standards. Feature

Surface Plate With Bench Centre Surface Plate with bench centre is the dual combination of surface plate and bench centre, this combined feature make them extremely useful inspection equipment in engineering industry. Standard size and accuracy of Surface plate with bench centre as per IS:2285-2003 and IS:5980-1978. Grade - 1

Mini Bench Centre Granite Base Granite Mini Bench Centre is made of black granite base which is naturally seasoned and provide better finish and accuracy .T-Slot made of steel is fixed within granite base on which two cast iron heads are mounted, both the heads can be moved to the desired positions depending upon the size of component to be checked. One of the centre is spring loaded to ensure uniform pressure while holding work piece and easy loading and unloading without disturbing the accuracy of the centres. Luthra Granite Mini Bench Centres are specially designed for checking concent

Mini Bench Centre Cast Iron Base Luthra Mini Bench Centres are specially designed for checking concentricity, parallelism and true rotations of components having smaller dimensions. These are widely used in industries manufacturing smaller CNC turned automobiles parts, watch spares and microscopic parts etc. where higher accuracies are required. Some silent features of mini bench centre are: The base of bench centres and its heads are artificially stress relieved as precaution against distortion One of the centre is spring loaded to ensure uniform pressure while holding and easy

Cast Iron Bench Centre Backed by a team of experts, we are offering a qualitative range of Bench centres that are accurate and quick method for inspecting radial run out of camshafts, crankshafts and cylindrical shafts. Manufactured as per IS: 5980-1978, these are utilized in machine shops, tool rooms and standard rooms for checking various parameters such as concentricity , parallelism and true rotation of components. The bench centres manufactured at our works are made up of close grained cast iron and finished to higher degree of accuracy by hand scrapping. Some of the salient features

Vertical Bench Centre Luthra Vertical bench centre is ideal, accurate and quick method for inspecting radial run out of camshafts, crankshafts, cylindrical shafts. Gear teeth run out can also be inspected by using mandrel ,arbour or directly to the centre . Luthra Vertical Bench centre is ideally suited in machine shops , tool rooms and standard rooms for checking various other parameters like concentricity and true rotation of components in vertical position. Some of the silent features of Vertical bench Centre are: Base of bench centre is made of close grained castings and finishe