Mahr - Product Catalog Page 421
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MaraMeter 844 NB Self-centering Dial Bore Gage FEATURES Application: • For blind holes, to measure almost to the base of a bore TECHNICAL DATA Order no. 4474179 4474180 Product type 4474186 844 NB Measuring range mm 20 – 50 50 – 110 110 – 300 Measuring range inch 0.79 – 2” 2 – 4.33” 4.33 – 11.81” Design For blind bores. Moveable anvil and stationary anvil carbide-tipped Error limit Ge µm Repeatability fw µm 3 2.5 1 a b c d e mm mm mm mm mm 4474179 1.5 10 77 60 163 4474180 1.5 12 60 60 144 4474186 2 18 90 90 163 e Order no. 4 c b a • Measuring head consists of a carbide tipped moving anvil and an interchangeable stationary anvil with a carbide ball • Transmission lever system transfers movement of movable anvil to indicating instrument • The broad centering bridge ensures automatic centering in the bore • Resistant to temperature because the shank and transfer rod are made of heat resistant Invar steel • Highly resistant to wear and tear because of carbide tipped moving anvil • Constant measuring force due to built-in spring, eliminating user influence • Universally applicable and extremely versatile - Each instrument spans a broad measuring range - Quick and easy to adjust to any size (within its range) • Invar steel has a particularly low expansion coefficient - instrument totally insensitive to any kind of heat (including user body heat and increased ambient temperature) • Package contains: measuring holder, measuring head, anvil spindle, wooden case, excludes indicator ACCESSORIES Order no. Product name Product type 4333000 Millimess 5 µm, ± 130 µm 1004 4334000 Millimess 1 µm, ± 50 µm 1003 4335000 Millimess 0.5 µm, ± 25 µm 1002 4337662 Digital indicator, 0.0005 mm, 12.5 mm 1087 BR 4337664 Digital indicator, 0.0005 mm, 12.5 mm 1087 BRi 1004 1003 1002 1087 BR MaraMeter | Indicating Measuring Instruments 1087 BRi 417
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