E-41EMitutoyo reserves the right to change any or all aspects of any product specication, including prices, designs and service content, without notice.Reference GagesLength Standards Brought to You by Mitutoyo• The High Precision Square is a gage used for inspecting the travel straightness and axial perpendicularity of moving elements on equipment such as machine tools, CMMs, form measuring machines and semiconductor-related equipment.• All four surfaces, nished using ultra-precision technology built on our experience in gauge blocks and other products, can be used as reference surfaces.• Better than 1 μm/300 mm straightness and perpendicularity of each (four) reference surface. In addition, front and back faces are accurate to better than 5 μm/300 mm.• Three nominal sizes are available (90×110, 160×210 and 260×310 mm) so that you can select the size that best suits the application.High Precision SquareSERIES 311311-111311-112311-113SPECIFICATIONSMetricOrder No.Dimension (W×L×T) (mm)Mass (kg)311-111 90×110×25 1.5311-112160×210×25 5.0311-113*260×310×3014.0* Supplied with a removable handle.An inspection certicate is supplied as standard. Refer to page U-9 for details.Technical Data• Reference surface Perpendicularity tolerance: 1 μm Straightness tolerance: 1 μm• Front/back faces Perpendicularity tolerance: 5 μm Straightness tolerance: 5 μm• Dedicated wooden case is provided.

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