SL2 Dual Scale Linear Micrometer

Dual Scale Micrometer
75mm x 25mm x 1.5mm
Chrome markings on Soda Lime glass

In stock
US $179.55

Maximum 2000 characters

This slide is ideal for calibrating optical products with a large field of view, such as stereo microscopes or imaging systems. It contains a  scale bar in MM and Inches. 



  • Material: Soda Lime Glass
  • Pattern: Low Reflective Chrome
  • Size: 3" x 1" (76mm x 25mm)
  • Thickness: 0.060" (1.5mm)


A dule linear scale, top part inmetric and the bottom part in imperial.  Tick mark width on both scales is 0.010mm. On the metric scale, one tick every 0.1mm with accentutated tick every 1mm. On the imperial scale, one tick mark every 0.005 with accentuated tick every 0.1inch. Total length is 50mm for the metric scale, and 2inches for the imperial scale.


As standard products, these are available on Soda Lime glass with a low reflective chrome pattern etched onto the surface. The chrome material, when viewed from the top surface, will have an oxide layer (CrO) to reduce light reflections. Please enquire if you need this on different material substrates, such as Fused Silica (Quartz) or Film


Our standard production turnaround is 5 days from receipt of order. We can offer faster services if required for more urgent orders.


We inspect the piece by eye for flaws, design inaccuracies and contaminations. We measure the design to check that it conforms to the specifications, and record both of these measurements on our internal inspection records. Finally, we find the CD of the mask, measure that, record it, and also take a digital photo that is saved with the inspection log. We use Nikon MM40 at 900x magnification and an OGP ZIP 300 at 400 x magnifications for this.

CERTIFICATE OF CONFORMANCE:   In addition to the standard inspection process described above, we will then document them via a Certificate of Conformance . Tolerances are per our standard tolerances.

CERTIFICATE OF MEASUREMENT:   A combined conformance and measurement certificate. The extents of both scales are measured. Tolerances are per our standard tolerances.


Please see the TECHNICAL sections, DOWNLOAD sections and FAQ for further information. If you still require clarification, please either email or click for LIVE SUPPORT.

Material Specifications
Product Specifications
(Size: 725.3 KB)
This is a low resolution picture showing the general design layout of one of the layout options. The layout you receive may differ slightly. We will send you a copy of your chosen layout after ordering. The quality of the picture does not represent the final product.



Soda Lime Glass is the most common substrate used for masks, due to its good quality/price ratio. The glass is optically good, very flat and has no imperfections. If used in a photo-lithographic process, glass can be used with a very wide variety of light sources from 350nm upwards, with an excellent UV transparency. Soda Lime glass has a thermal co-efficient expansion of 93 (10-7) which is approximately 10 ppm (parts per million) , and a transmittance value of 88% at 375-450nm, with a glass flatness class of 5um for the smaller plates and 10um for the larger plates. Some of the very big plates of 14" and above, may have a bigger flatness tolerance. 



  • Soda Lime Optical transmission of visible light = 88%
  • Soda Lime Optical transmission of visible light = 375nm
  • Soda Lime thermal expansion co-efficient =  10ppm





Q: The pattern doesnt represent what i need - can we alter it as a special design?

A: Yes ....The patterns here are standard products, but we can certainly transfer almost any design to the slide (Note the price will change accordingly)


Q: How long from order to dispatch?

A: Typically we have these products in stock on the shelf - however, it may take upto 5 days before they are dispatched. If you need the product more urgently, please contact us direct and we will do our best !


Q: Can you send me a scaled picture showing the detail in higher resolution?

A: Certainly, we have higher resolution graphics that we can email you. Please contact us via the Live Support or by Email.


Q: Can I have different materials?

A: Yes. Our standard products are Low Reflective Chrome on Soda Lie glass - but we can offer different base material (Quartz, Borofloat etc) and different masking materials (Aluminium, ITO, Gold etc), as well as simply different thicknesses of glass. There will be minimum order quantities for most of these special materials of at last 6 pieces, but with more "exotic" combinations considerably more.