A small utility to generate Vernier scales for safe lock manipulation.

https://pierre-hyvernat.apps.math.cnrs.fr/data/Misc/VernierWheel/vernier.html

• choose N (number of ticks on the actual wheel)
• choose D to get the precision you want; a value of D=10 means you can (try to) read up to one tenth of a graduation
• uncheck the training mode option,
• choose the value of n so that you get several scales for the price of one.
• download SVG file and print it

• choose N (number of ticks on the actual wheel)
• choose D to get the precision you want; a value of D=10 means you can (try to) read up to one tenth of a graduation
• check the training mode option,
• choose n=1,
• check the show wheel offset option (at the bottom of the page)

Pressing 's' should show the offset, or regenerate a new one (and hide it).

Simple HTML5, CSS, javascript with jquery, SVG.js and svg-pan-zoom.

This is released under the GNU General Public License v3 (https://www.gnu.org/licenses/gpl-3.0.html)