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250μm x 2mm Rectangular Slit
0.25mm (250μm) wide and 2mm long Rectangular Slit Aperture fitted into a mount
L250
£110.46
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+/-3μm
0.5μm/mm
Copper Foil, Blackened one side
3mm Diameter
Circular Holder in Black Anodised Aluminium, 12.7, 16 or 25.4mm diameter, 2mm thick