Looking otherwise identical to the American  Mk. 2 Clausing 100, the Broadway-badged BL624 lathe (as sold in Great Britain) used different bed feet and a full-circle carriage handwheel.
Although the precise history of Broadway is not known, another interesting development of the Clausing 100 Series Mk. 3 lathe was sold through Metropolitan Distribution Ltd. of Truro, England under the name "Fortis" and "Fortis Imperial" and possibly, in addition, branded as the "Broadway" - though the latter is known to have carried standard Clausing badges as well and was probably just an ordinary, re-branded  import. The final incarnation of Metropolitan was a company called Luke Anthony Ltd. of Camborne, Cornwall, an organisation known to have survived into the early 1960s.
In the late 1940s and early 1950s there was an acute shortage of machine tools on the UK market, with very long delivery times and, although the Forties looked, at a glance, exactly like the Clausing, they were not made in America. All the Fortis castings were subtly different and with a finish inferior to those by Clausing. In addition to other, smaller changes (detailed in the Fortis pages), a different screwcutting gearbox was used, one similar to the second version of the Clausing box, but without the "V" arrangement of the selector holes. The Fortis was advertised as being available in two versions, the "Standard" and "Precision", the latter "built to Schlesinger limits for toolroom or production work". In reality it is unlikely that the lathes were built to two different standards and the "precision" lathes would have been those that came through the post-build alignment tests with the 'highest scores'. Spindle speeds also differed from the Clausing being doubled in number to 12 and ranging from either 40 to 2350 r.p.m. or 45 to 2500 r.p.m. and the quick-change gearbox listed as having the ability to generate 48 inch pitches The stands were also unique with one incorporating a motor mount inside the left-hand cabinet leg. Technical details for the Broadway are identical to those for the Mk. 2 Clausing 100.
If you have a Broadway lathe the writer would be interested to hear from you.