Is there an international standard size for crokinole boards and discs ?
The World Crokinole Championship™ (now moving toward their 7th annual event) recognizes the use of round crokinole boards with approximately the following specifications:
26" diameter playing surface (66cm)
distance from 'dead' centre of the '20' hole to the pin/post circle is 4" (102mm)
distance from pin/post circle to 10/5 circle is 4" (102mm)
distance from 10/5 circle to 5/start circle is 4" (102mm)
distance from 5/start circle to the edge of the playing surface is 1" (25.5mm)
These equidistant factors contribute to the 'science,' design, and original intent of the game.
"20" hole diameter is generally 1-3/8" (35mm) with a depth of ¼" (6mm)
width of dividing circle lines is recommended as 1/16" (1.5mm) but no more than1/8" (3mm)
width of ditch/gutter (from side rail/rim to edge of playing surface) is a minimum 2" (51mm)
This standard is neither new nor something defined solely for the WCC event. Rather, this is the paradigm viewed from dimensions established more than 120 years ago. During the 1880s, most Canadian and the only-known American manufacturers (especially M.B.Ross Company of Pennsylvania) constructed crokinole boards within these standard dimensions. As of mid-2002, this international standard is now being manufactured by crokinole game board makers in Canada, United States, Germany, England and Australia. International standard disc size has been set at 32mm diameter x 10mm thick ± .5 mm