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Brown & Sharpe Everything You Need to
Measure Large Sizes
Large sizes in mechanical engineering are dimensions in excess of
20″ (500 mm). Choosing the right instrument and method to measure
large dimensions is crucial for minimizing gravity-induced
distortion. For dimensions from 10″ (250 mm) up to 6 ft (2 m),
Brown & Sharpe offers different types of measuring
instruments that have long proven their value in practical use.
Whatever the dimension, from a simple distance between two
parallel surfaces or the measurement of a large diameter, Brown
& Sharpe’s line of Inside Micrometers, Universal
Measuring Instruments, and Comparative Measuring Instruments
include features and accessories to accommodate virtually any
application.
• Internal and external measuring, either vertically or
horizontally.
• Separate calibration of the measuring head, with measuring
arms in
position, by means of the setting gage supplied.
• Rigid, durable, firmly connected extension pieces of 1.5″
(38 mm) diameter.
• Negligible deflection in service.
• Internal gage rods protected from thermal expansion due to
hand heat by
the surrounding walls of the extension pieces. Optional 40″ (1000
mm)
extensions are available for very long measurements. Above 100″
(2500 mm)
some accuracy is lost and special handling is required. Please
consult with your Swiss Instruments sales representative to
ensure you have the correct instrument for measuring large
dimensions accurately.
TECHNICAL INFORMATION
Measuring head:
Micrometer system with .05″ (1 mm) pitch and a range of 1″ (25
mm), barrel graduations .0005″ (0.01 mm). The plunger movement is
transmitted to a dial indicator with .0005″ (0.01 mm) scale
reading and an anti-shock mechanism, with ball bushings. Simple
conversion from internal to external measurement and vice-versa
by turning a screw on the measuring plunger.
Measuring arms:
Hexagonal section, clamped to the fixed anvil and the measuring
plunger, at the height needed for the component being measured.
Three pairs of standard arms, all fitted with tungsten carbide
contact faces: contact faces spherical, on instrument centerline,
for internal measurements; offset, for depths to 2″ (50 mm), for
internal and external measurements; extra-rigid, for depths to 3″
(75 mm).
Tags: bore mic large dimension
