look box

look box

[′lu̇k ‚bäks]
(chemical engineering)
Box with glass windows built into distillation-column rundown lines (or other flow lines) so that the stream of condensate from the condenser can be watched.
References in periodicals archive ?
Trends are all about timing, and uber-straightening has been away for just long enough for it to look box fresh again.
As well as boasting a tongue so big they could touch the dad-of-three's nose, they look box fresh - social death.
Newton-le-Willows-based Lancashire Tea has committed its support to the charity and the SSAFA logo can now be seen on the brew's new look box, confirming that 5p from every pack purchased will be sent direct to the charity.