Vintage fountain pen sacs, fountain pen parts, tools and repair kits
Sac Peg Gauge
Sac Peg Gauge

Sac Peg Gauge

Regular price £12.99 £0.00 Unit price per

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.