lots of statements,regarding dividing heads,and some are not entirley true. Comparing a rotary table to a dividing heads is ok but a rotary table with dividing plates or stepping drive can only be compared to a universal dividing head which has a full set of gears which increases the dividing range,carry out helical cutting for gears and threads . Spirals can be cut in a face ,silmilar to the scroll of a 3 jaw chuck,plus cams for auto lathes.I have dividing heads and rotary tables,though the most ffequently used indexing tool is a Marlco twenty four position indexer which is meant to be used with the chuck vertical though it can be used horizontally with an angle plate,24 positions allows indexing of 2,4,6,8,12,24 divisions there is an outer ring divided in degrees.An industrial quality device fitted with a 5 inch Burnerd chuck and an adapter plate to take a 5c collet chuck. Great for making brass fittings with hex features,old style whit nuts and bolts and lots of othe items which require indexing to a good quality but not quite to the precision of a good dividing head,and its quicker to set up and use plus it allows the dividing head to be only used for precise work thus reducing wear and maintaining accuracy.