Peak 1972-S Glass Measuring Scale Ruler, 300mm - 1000mm

PEAK 1972-S glass measuring scales are the optimum tool for quick and accurate determination of lengths and distances that are greater than can be seen within the field of view of a measuring magnifier. The Peak 1972-S has a scale with divisions of 0.1mm on the clear glass plate and is available in four lengths of 300 mm, 500 mm, 700 mm and 1,000 mm each supplied with two achromatic, focusable, 10 x reading magnifiers (see measuring magnifier Peak 1983). The magnifiers on these measuring scales have a field of view of 20 mm. The acrylic mounts for the magnifiers have leaf springs integrated into the sides to prevent them from slipping. Separate silk lined boxes are included for the glass measuring scale and the two magnifiers.

When measuring lengths and distances it is necessary to ensure that the scale is parallel to the object to be measured, to prevent measuring errors.

Specification:

• Measuring scale Increments = 0.1 mm labelling 0.10 .20 ... (mm)
• The graduations and numbers on the glass rods are high resolution and scratch resistant.
• The graduations have a thickness of 0.020 mm
• Accuracy of graduation ± (0.003 mm + 3L / 1,000,000) (dimensions based on 20°C)
• Thermal coefficient of expansion: 9 x 10-6 / °C
• Refraction index = 1.5195
• Material = float glass (selected)
• Scaling not centred / centred on glass element! (multiple use)
• Length of glass element = see below
• Width of glass element = 49 mm
• Thickness of glass element = 9.8 mm
• Available in lengths of (measuring range on double scale):