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Precision Straight Edges




  • Inspection and alignment tooling
  • Precision ground edge(s)
  • LARGE Straight edges up to 16 feet 
  • Custom designs available
  • Accuracy measured over entire length

  We supply precision straightedges from 3 feet to 16 feet long for inspection and alignment applications. Our standard precision steel straight edges are precision ground with ONE useable edge. The flatness and straightness specifications for steel straight edges range between 0.001 to 0.004 inch depending on the length of the unit. A print for each unit is available by clicking the PDF icon. The tolerances for the maximum allowable deviation over the length of the entire measuring  surface are shown in the chart below:



Made in USA



Part Number Size (L x H x W) inches

Print PDF


Straight within


  Solid Steel Precision Straight Edges for Inspection and Alignment with one steel edge
  SE36x3x05 36" x 3" x 1/2" - no holes



$ 500.00

  SE48x3x05 48" x 3" x 1/2" - no holes



$ 625.00

  SE60x3x05 60" x 3" x 1/2" - no holes



$ 750.00

  SE72x3x05 72" x 3" x 1/2" - no holes



$ 750.00

  SE84x3x05 84" x 3" x 1/2" - no holes



$ 875.00

  SE96x4x05 96" x 4" x 1/2" - no holes



$ 1125.00

  SE120x4x05 120" x 4" x 1/2" - no holes



$ 1125.00

  SE144x4x05 144" x 4" x 1/2" - no holes



$ 1125.00


  SE168x5x05 168" x 5" x 1/2" - no holes




  Steel Precision StraightEdges with one steel edge and cutouts to reduce weight
  SE96x4x05H 96" x 4" x 1/2" - 16 holes



$ 1750.00

  SE120x4x05H 120" x 4" x 1/2" - 20 holes



$ 1750.00


  SE144x4x05H 144" x 4" x 1/2" - 24 holes



$ 1750.00

  SE168x5x05H 168" x 5" x 1/2" - 28 holes



$ 2125.00

  SE180x5x075H 180" x 5" x 3/4" - 30 holes



$ 2375.00


Aluminum Precision Straight Edges For Leveling with two aluminum edges and cutouts to reduce weight
  SE48x4x1.5H-AL 48" x 4" x 1-1/2" - 8 holes



$ 1000.00

  SE72x4x1.5H-AL 72" x 4" x 1-1/2" - 12 holes



$ 1500.00

  SE96x4x1.5H-AL 96" x 4" x 1-1/2" - 16 holes



$ 2250.00


  SE120x4x1.5H-AL 120" x 4" x 1-1/2" - 20 holes



$ 2750.00


  SE144x4x1.5H-AL 144" x 4" x 1-1/2" - 24 holes



$ 2750.00

  Extruded Aluminum Precision Straight Edges with one Stainless Steel Edge - www.paveflat.com
  PaveFlat-10 120" x 4.1" x 1"




  PaveFlat-12 144" x 4.1" x 1"




  PaveFlat-16 192" x 4.1" x 1"




  If you can't find what you need. We also build Special Straight Edges to your specifications
  Straight Edges with Certified Quality    
  Have you ever noticed how most of our competitors never mention what sort of quality they provide with their straight edges? We provide certification document for each precision straight edge. We will check your precision straight edge using a certified granite surface plate with traceability to NIST standards. Our inspection procedures check the flatness and straightness for each straight edge.

Sample Inspection Certificate

  Choose One or Two Edges
  The above prices for standard steel straight edges include certification for only ONE edge. We cannot guarantee the quality of both edges of the straight edge unless we grind and certify both sides.  Aluminum parallel bars include two edges.

We can certify both edges for an additional charge of
In addition to the extra grinding and inspection time, this additional charge includes masking, cleaning tape residue, and applying rust preventative on the two unpainted edges. If you purchase this extra option the straight edge will include TWO useable edges that are straight, flat, and parallel within the tolerance specified. To add a second useable edge to your straight edge, look for this selection under optional cost items in our store.
  Our standard straight edges cannot be used as a set of parallels. We consider the length, height and width dimensions to be nominal within the deviation allowed on the print. No two straight edges with the same part number will have exactly the same dimensions for height, width, or length unless this feature is special ordered for an additional cost.
  Straight Edges Made from Durable Steel        
  Most of our standard precision straight edges are built from hot rolled steel that has not been heat treated. Hot rolled steel does not require annealing and the high temperature prevents stress from accumulating in the material which results in better dimensional stability than cold worked materials. Our units typically hold shape better as there is no residual memory effect from stresses caused by hardening. We achieve very close tolerances at competitive pricing. Most of these units were designed for careful inspection and used by professionals who know how to handle a precision tool. Unfortunately, even hardened steel will nick if dropped.
  Light Weight Aluminum Straight Edges      
  We also make standard precision straight edges for leveling applications that are made from Aluminum. These straight edges were designed to be used with precision machinist levels for rigging and machine installations.  These leveling straight edges include TWO useable edges. The ligher weight compensates for the extra width required to hold the base of the level and wear is not a factor for this application because the edge does not usually contact a rough surface. 

  Corrosion Protection Included on Straight Edges        
  Standard precision straight edges are normally painted on five sides to prevent corrosion. This leaves only one side to keep oiled. We can leave your unit unpainted but then you would have to oil all of the sides or it would rust. Then it would then be very slippery to pick up. The unpainted side is certified for the entire length of the unit. Standard straight edges from stock are usually painted the color grey.
  Chamfers on Edges Included on Straight Edges        
  We normally chamfer the four edges on a straight edge to prevent cuts when handling. The standard straight edge includes lightly chamfer edges that measure (45 x .010")
  Credit Cards Welcome

Credit Cards Accepted

  We also accept Visa, Mastercard, and American Express. You can use this order button with a credit card to order on line. You can also call us with your order at 937-438-8031.
  Purchase Orders from Commercial Customers
  We accept purchase orders. Our terms for commercial customers are usually Net 30 days with approved credit or COD without approved credit. If you are applying for credit with our company, and if you are not a major Fortune 500 sized corporation, please include your standard credit references with the order. If you need a W-9 or other information from us to set us up as a vendor, we promise a very quick turnaround on this paperwork. Please make your purchase order out to: Mike Petsch and Associates, Inc. , P.O. Box 684, Tipp City, OH 45371. Your purchase order should include your phone number, shipping and billing address. Email your purchase orders with references to: donpetsch@gmail.com You can also fax us at 937-438-8031
  Shipment Times for Orders        
  Most units up to 6 feet in length are usually in stock or available in 2 to 3 days. Most other standard straight edges ship in 1 to 2 weeks ARO. We ship most special designed straight edges approximately 1 to 4 weeks after we have received your design approval. For more shipping infomation use the button on the right.

Important Shipping Information

  Storing and Transporting Straight Edges      
  For best results straight edges should be stored fully supported on a qualified edge to reduce stress on the unit. When storing or transporting straight edges you should take care to prevent damage to the unit, by protecting the unit with effective packaging. Avoid contact with objects that can nick or bend the unit. Extreme temperature changes may change the shape of your unit. Clean and dry all straight edges before long term stowage to prevent corrosion. The qualified edge on some SE series straight edges is made with carbon steel and should oiled to prevent rust on non-painted surfaces. Paveflat and other straight edges made from aluminum or stainless steel; do not have to be oiled.

Under dry conditions, the original fiberboard packaging can be used to transport or store your straight edge. Many of our customers transport their straight edges to the job site inside of PVC pipe mounted on top of truck racks. While PVC pipe will prevent nicks to the unit, is does not prevent damage if the PVC pipe is bent. It is important to support the PVC pipe at multiple points to prevent bending. For straight edges over 6-foot long, pressure on the outside of the PVC pipe can deflect it enough to cause damage to the straight edge inside sometimes without any signs of damage to the outside PVC pipe. The best straight edge packaging is usually an oversize wooden box with handles. Unfortunately the best wooden boxes often are heavy and costly solutions.
  FAQ and Other Alternatives  
  Frequently asked questions include: Do I really need to lug around a heavy steel straight edge to check flatness and straightness? What about using Lasers? Isn't there something easier or cheaper out there? Why can't we check it with our CMM? Couldn't I just buy some ground flat stock and use it? Will aluminum straight edges work? For a few ideas concerning possible alternatives to using precision straight edges check out FAQ 

 Frequently Asked Questions

  Applications for Precision Straight Edges        
  Precision straight edges are useful for and checking the flatness of surfaces and leveling machine tools. In most of these applications, the straight edge is used as a reference surface to check your part. With a straight edge you can track and isolate potential sources of error. The amount straightness deviation usually measured by inserting a feeler gauge between the part and the straight edge.   Our customers keep finding new and innovative uses in a wide range of industries. Our precision straight edges are being used for the following applications:

Check flatness with Straight Edge and Feeler Gauge

  Equipment Alignment of: Assembly fixtures, Wood flooring mills, Aircraft Body Joining, Table Saws, Injection molding machines, Jointers, Nuclear reactor piping, Glass display cases, Coupling alignment, Blanchard grinder chuck regrinding, Tunnel boring equipment, Rubber rollers for counter laminate feeding, Wood molding machinery, Fan blades, Railroad tracks and switch frogs, Sheet metal perforating equipment, Double disc grinder spindles, Router fences, Die cast machine platens, Chain & sprockets, Carpet trimming equipment, Roll forming dies, Reactor cooling pumps, Printing Presses, Oil refinery equipment, Prop Shaft Alignment, Coil slitting equipment, sputtering targets, Laminate flooring trimming, Print heads for large scale printers, Plywood manufacturing machinery, Blanking press, Natural gas pipeline equipment, pool tables, and Cement plant processing equipment.

Straightness Inspection of: Engine heads, Engines blocks, Engine flywheels, Engine crankshafts, Granite counters, Printing Litho stones, Aluminum coil rolls, Refractory brick, Ceramic pump seal faces, Turbine blades for windmills, Chemical pressure vessels, Roadbeds and paving, Injection molded plastic containers, Pump Bases, Snowmobile drive components, Engineered molded plastics, Fabricated weldments, Aircraft ribs, Lift truck masts, Automotive Test Tracks, Concrete Levees, and Runways.

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