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Meaning of block instrument | Babel Free

Noun CEFR B2

Definitions

An instrument installed in a cabinet, used in block signalling installations.

UK

Examples

“The line is signalled with upper quadrant semaphores and Sykes lock⟳ and block⟳ three-wire two-position block⟳ instruments. [...] The Inspecting Officer concludes that both signalmen must share⟳ responsibility for the accident by the irregular release⟳ of the block⟳ instrument, but remarks that the two-position Sykes instruments, although ample for maintaining safety under normal working, do not show⟳ clearly the state of the block⟳ section ahead.”

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
See all B2 English words →

See also

Block Island Block Island Sound block length block letter block level element block macromolecule

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