The carb in the picture is one of two version.
Its the better one of the two because it has an adjustable low side and high side.
Its not a bad carb, you just need to know how to work on them and tune them ( a lot like tilllotson only more trouble to adjust the pop off presure ).
Like all techumseh products quality leaves a lot to be desired ( all over the place )
Lauson Power Products was a maker of premium quality small engines.
Most of the better stuff Tech sold was decended from these engines.
Eventualy Tech dragged the Lawson name down to their level however.....