Custom Rulers
High Precision
Rulers, Dials

.Standard Products


High Precision Rulers with a Certificate of Calibration traceable to NIST

(Scanogram) Rulers
Visual Analog Rulers
(VAS Rulers)
Stainless Steel Rulers
Flexible Stainless
Steel Rulers
Extruded Aluminum
Pocket Clip Rulers
Triangular Ratio
Scale Rulers
Digital & Analog
Vernier Calipers


Anodized Aluminum
Gold Color Rulers
Folding Rulers
Special Rulers

Special Rulers and Gauges
Custom Made

Custom Medical Rulers

Custom Architectural Rulers

Custom Engineers' Rulers

Custom Multi Ratio-Scale Rulers

Customized Triangular Rulers

Custom Point & Pica Rulers

Customized Pocket Rulers w/Logo

Custom Folding Rulers

Custom Gauge-Ruler Combinations

Custom Tool Joint Identifiers

Custom Brass Rulers

Customized Golden Rulers w/Logo

More Special Rulers

Custom Graduated Rings & Dials

Custom Verniers

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Whittam High Precision Calibrated & Certified

Custom Rulers

Precision Ruler Certificate of Calibration

        Whittam High Precision Rules (Rulers),
        Vernier Sca
les, C

ircular S

        Index Rings and Machine Dials
        custom made exactly to your specifications!
        (especially suitable for industrial applications)

Whittam High Precision Calibrated &
Certified Custom Rulers
made to any length,
Vernier Scales, Circular Scales,
Index Rings and Machine Dials
 custom made exactly to your specifications!
(especially suitable for industrial applications)




Custom Hith Precision Rulers Accurately measure length, radius or circumference with Whittam high quality, high precision, engraved, metal, metric or inch, Vertical or Horizontal Rules (Rulers), X-Ray Rulers--also called Scanogram/Radiology/Radioopaque Rulers, Vernier Scales (Verniers), Index Rings, Graduated Segments, Shrink Rules and Straight Edges, Circular Divided Scales, and Machine Dials, etc...  
     Our Whittam calibrated engraved rulers plus other Whittam products are of exceptional quality and precision and boast of a long tradition of craftsmanship.
     Upon request, our rules (rulers), can be issued an individual Certificate of Calibration  traceable to NIST.   Such certificates may be required for companies qualifying for ISO Certification.
   Made to any scale length or dial diameter!
   Ruler/Vernier Graduations - Inch or metric (or both)!
No minimum quantity required!
Quick delivery--2-3 week delivery is available (std 5-7 wks)
   High accuracy in any length or radius--Whittam rules (rulers/precision scales) are being manufactured with ever increased accuracy since 1860. Graduated rules can be supplied with accuracies of 1/100 mm (0.0004") over 61 cm (24"). Whittam is capable of manufacturing up to 132" long scale sections which can be joined together to any length. The high accuracy is maintained over longer distances by joining the ends ground for butting within .025 mm (.001"). Our Whittam dials or circular scales are accurate to within 18 arc seconds or .00045" on a 10" diameter. We offer circular divided scales and index rings of up to 137 cm (4?") in diameter.

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Please note:
When asking for a quotation, a simple sketch, like the one below, is always helpful-

Whittam Sketch for precision ruler

In order to be able to give you an accurate quote, we need the following information:
a)  length
b)  width
c)  thickness
d)  how many edges to be graduated
e)  whether inch, metric or both
f)   what increments are the graduations to be in

horizontal rulers Horizontal
horizontal rulers Vertical
vernier scales Vernier

/How to read a vernier

shrink rules Shrink
graduated dials, rings and segments Dials, Rings & Segments
Circular Divided Scales Circular Divided Scales
Straight Edges Straight
Certificate of Calibration Certificate of Calibration
Unlike our competition, we do not issue Certificates of Calibration.  They are issued by in independent accredited laboratory regulated by NIST and therefore their accuracy is fully verifiable.

Your choice of material, finish and color (with the exception of wood)--the materials used are generally Hardened and Tempered Steel, Bright Mild Steel, Stainless Steel, Brass or Aluminum. We offer matte or polished finishes and a hard chrome plating or electrolyses nickel plating. Graduations can be left open or filled with one of the basic colors of your choice (black being the standard).
   Guaranteed greater durability in hostile environment--the engraving (etching with diamond tip tool) process used by Whittam (versus photo etching) ensures greater durability of the markings in a hostile environment and the unmistakable look of quality.
   Low prices--up to hundreds less than our competition! Specializing in custom designed measurement components gives Whittam a price advantage over the standard ruler and dial manufacturers who are not set up to handle "made to measure" orders and may charge you premiums in setup costs, etc... Our prices can be up to hundreds of dollars less than our competition--give us a try, call us with your specifications today!
   Made to your exact specifications--all Whittam products--horizontal and vertical rules, circular divided scales, straight and circular vernier scales, straight edges, machine dials and index rings are made strictly to customerís specifications with microscopic attention to detail.  Surpassing Rabone ruler, Lufkin ruler, Starrett ruler and Shinwa ruler quality


Past Applications


| Vertical reading scale fitted into the squaring arm of a Cincinnati Inc. shear
| Multiple engraved sectors and complete dials plus a linear scale on a Craftsman line-up table
| Horizontal and vertical scales fitted to a DeVlieg "K" jigmil
| Ealing Beck optical bench fitted with scales and verniers
| Vertical dual reading scales and verniers used on a Kearns-Richards horizontal borer
| Dual reading scales fitted to the bed of a Lodge and Shipley lathe
| Whittam index dial on a Setco way slide




  Whittam, Div. of Schlenker Enterprises, was founded in 1860 and over the years have established and maintained an exceptional
reputation for providing high quality precision products to the whole spectrum of industry all over the United States, Canada and Mexico as well as in Europe and Australia.

     Our Whittam precision scales (rules), verniers and dials have various uses and are in demand by machine tool and instrument makers; scientific, meteorological and medical establishments; graphic art and photographic companies; as well as the printing; engraving; and automotive industries. They are known to be called machinist's or engineer's rules (rulers). In fact, they can be used by anyone who wants to do a good job accurately.