metric tables

a selection of tables for conversions to and from metric units

  metric prefixes

a list of all the metric prefixes and their values

  ip table

full three figure index of protection table

  drill tables

recommended thread and tapping drill tables

  bolt clearances

recommended clearance hole sizes for metric bolts

  safety signs and colours

some information on bsi recommended safety signs 

  motor fuses

table of motor starting fuse ratings

  motor currents (1 phase)

list of typical full load currents

  motor currents (3 phase)

list of typical full load currents

  ammeters and wattmeters

recommended motor ammeter and wattmeter scales

  conduit capacities

table of cable carrying capacity for steel electrical conduit

  earth studs

table of typical current capacities for earth studs

  multipurpose  converter

a very useful converter for all sorts of units including a neat user customisable section run it from here, or
download for use off line