ISO 3801 specifies various methods for the determination of mass per unit length and mass per unit area.

Method 5 states to use a metal plate template, or a circular cutter to give a specimen of 100cm².

The template is not part of the circular cutter. 

If a 100cm² circular cutter (113cm diameter) is available then the template is not needed.  

James Heal does not offer the template, but does offer the circular cutter (Stock code 902-220).

A circular cutter is quicker and easier to use than a template and also gives a greater degree of accuracy and precision. 

A range of sizes for other applications are readily available from James Heal, in addition to replacement blades and cutting boards.

Additional FAQs concerning the different sizes of cutters and instructions for changing sample blades are available.