COMPASS FLUID. Many types of fluid have been used over the years to fill liquid-damped compasses. The presence of fluid acts to damp the horizontal circular oscillation of a compass card and allows the card to settle on north much faster than air-damped compasses. Liquid-damped compasses traditionally have a floating compass dial that turns instead of a moving needle supported over a fixed card - but occasionally you will see exceptions.
Compasses manufactured between circa 1904 and the late 1960s will almost certainly still contain the remains of Radium-based luminous paint. This is an extremely highly radioactive substance and potentially very dangerous. These compasses should not be opened by non-qualified personnel as the fluid, which will have been in contact with the Radium for many decades, will be as radioactive as the Radium itself.
Having Trouble with Gas boilers and Diesel engine's aircoolers ?
The PrimaSound Acoustic Cleaner will Solve your Problems. Acoustic Cleaners are low frequency, high powered horns designed as a highly effective, economical means of preventing build-up in industrial applications.
The floating block connection part visual inspection to be done carefully 1. The swivel bolt and lock-nut and spring pin visual inspection to be done. 1.1 Every year : to be inspected by annual safety surveyor 1.2 Every month : visual check by ship's crew
Hull roughness, surface roughness & Propeller roughness – some definitions. As “roughness” is not just roughness, definitions of some relevant types of roughness might come in handy.
The instrument to measuring hull roughness is The BSRA Roughness Gauge. The instrument measures the Average Hull Roughness (AHR), which is defined as the average of minimum 100 measurements of Mean Hull Roughness (MHR). MHR is the average of highest peak to lowest trough in 50 mm measuring length. MHR is comparable to “Average Rmax” or Rtm.
Variable Turbine Geometry technology is the next generation in turbocharger technology where the turbo uses variable vanes to control exhaust flow against the turbine blades. See, the problem with the turbocharger that we’ve all come to know and love is that big turbos do not work well at slow engine speeds, while small turbos are fast to spool but run out of steam pretty quick. So how do VTG turbos solve this problem?
COMPASS FLUID. Many types of fluid have been used over the years to fill liquid-damped compasses. The presence of fluid acts to damp the horizontal circular oscillation of a compass card and allows the card to settle on north much faster than air-damped compasses. Liquid-damped compasses traditionally have a floating compass dial that turns instead of a moving needle supported over a fixed card - but occasionally you will see exceptions.
Having Trouble with Gas boilers and Diesel engine's aircoolers ?
The floating block connection part visual inspection to be done carefully
Hull roughness, surface roughness & Propeller roughness – some definitions. As “roughness” is not just roughness, definitions of some relevant types of roughness might come in handy. 
Variable Turbine Geometry technology is the next generation in turbocharger technology where the turbo uses variable vanes to control exhaust flow against the turbine blades. See, the problem with the turbocharger that we’ve all come to know and love is that big turbos do not work well at slow engine speeds, while small turbos are fast to spool but run out of steam pretty quick. So how do VTG turbos solve this problem?