Model Engineer Vol. 206 No. 4395 Included in this months Model Engineer Vol. 206 No. 4395: SMOKE RINGSNews, views & comment onthe world of model engineering.BUILDING A DARJEELINGHIMALAYAN CLASS B0-4-0 TANK LOCOMOTIVEIN 31⁄2in. GAUGERay Mc Mahon continues with thecylinder drain cocks & slidebars.GREAT WESTERN 5in.GAUGE LOCOMOTIVESPeter Rich continues his design forhis ‘ Dean Single’ & ‘ Armstrong’4-4-0 class locomotives.BUILD A MINIATURE DOUBLEDIAGONAL STEAM ENGINEMogens Kilde describes hisscratchbuilt model.AN EPICYCLIC ADVENTUREJames Buxton describes his firstventure into Epicyclic geared clocks.WORTHING EXHIBITION 2010 Peter Guy reports on the Worthingand District Biennial Exhibition.