Description
82-CS-300 Length Measurement > Precision glass straightedge with magnifier
The classic instrument for length measurement
These precision glass measuring rulers feature graduations and numerals consisting of hard chrome that is vapor-deposited. A scale is available in metric or inches. A white strip serves as a background on one side of the numerals to allow them to be read easily. The chrome scales are equipped with two anodized handles on the sides for safe handling.
A precision magnifier (type Peak Lupe 2016 with a 15x magnification factor and a 12 millimeter field of view) in combination with the two lights ensures easy, error-free reading of the scale. The smallest increment on the inch scale is 0.005″. The minimum step on the metric scale is 0.1 millimeter.
These valuable precision glass measuring rulers are delivered in a sturdy wooden case to protect them from damage and are available in lengths of 300, 500, 800, 1000, 1400, 1600, and 2000 mm. Special lengths can be manufactured upon request. These glass measuring rulers have the advantage that their expansion is minimal when heated. Temperature variations therefore have hardly any impact on precision measurements.
A further increase in reading accuracy is possible with the chrome microscale, see product type CS Micro. With a customized analog or digital dial indicator, you can measure the distance between one-tenth of a graduation. This enables exact measurements down to hundredths of a millimeter.
| Specifications | |||
| • | Upper measuring scale: Increment = 0.005 ” marking (small) 0 .05 .10 .. (inches) marking (large) 0 1.0 2.0 … (inches) | ||
| • | Lower measuring scale: Increment = 0.1 mm marking (small) 0 0.1 0.2 .. (mm) marking (large) 0 10 20 … (mm) | ||
| • | The graduations and numerals are vapor-deposited with hard chrome on glass rods, offering high resolution and absolute scratch resistance. The graduations have a thickness of 0.010 mm. | ||
| • | The white bands facilitate reading in dark areas. | ||
| • | INCREMENT accuracy according to DIN 864: ± (0.003 mm + 3L / 1'000'000) Example: L = 500 mm, graduation error <= 0.0045 mm (Size based on 20 ° C) | ||
| • | Thermal expansion coefficient: 9 x 10-6 / ° C. | ||
| • | Refractive index = 1.5195 | ||
| • | Material = float glass (selected) | ||
| • | Scale not centered / centered on the glass element! (Multi-turn use) | ||
| • | Length of glass element = nominal length in inches x 25.4 mm / inch + 49 mm | ||
| • | Width of glass element = 39 mm | ||
| • | Thickness of glass element = 6 mm | ||
| • | Available in lengths (measuring range on dual scale): | ||
| 300 mm / 12″ = total length | 353.8 mm (± 1 mm) | ||
| 500 mm / 20″ = total length | 557.0 mm (± 1 mm) | ||
| 800 mm / 32″ = total length | 861.8 mm (± 1 mm) | ||
| 1000 mm / 40″ = total length | 1065.0 mm (± 1 mm) | ||
| 1,400 mm / 56″ = total length | 1471.4 mm (± 1 mm) | ||
| 1,600 mm / 64″ = total length | 1674.6 mm (± 1 mm) | ||
| 2000 mm / 80″ = total length | 2081.0 mm (± 1 mm) | ||
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