This will be one of the most useful tools in your collection.
Simply fit the sac peg on the section into the correct size hole and read off the sac size require.
The holes correspond with the sac chart shown on the sac listings.
The ink sac gauge has been designed by and manufactured for the Pendragons.
Made from high quality aluminium.
The sizing of ink sac's is in units of 64th's of an inch. Therefore a size 16 sac is 16 / 64th's of an inch in diameter.
In this metric era it's a little difficult to measure in that format.
The table below of sac sizes has been converted to the nearest metric mm equivalent.
Size 10 Fits a sac peg of 4.0 mm
Size 12 Fits a sac peg of 4.7 mm
Size 13 Fits a sac peg of 5.1 mm
Size 14 Fits a sac peg of 5.5 mm
Size 15 Fits a sac peg of 5.9 mm
Size 16 Fits a sac peg of 6.3 mm
Size 17 Fits a sac peg of 6.7 mm
Size 18 Fits a sac peg of 7.1 mm
Size 19 Fits a sac peg of 7.5 mm
Size 20 Fits a sac peg of 7.9 mm
Size 22 Fits a sac peg of 8.7 mm