Why can sizes are 303x406

Quick question: Does anyone else know that 303x406 means 3–3/16 in diameter by 4–3/8 in height, using the old 16ths-of-an-inch code? I’m curious who first standardized that nomenclature and whether any plants still spec to 211x400 or metric equivalents on their retort load calculators.

‌⁠‍⁠​‍​‍‌⁠‌​​‍​‍​⁠‍‍​‍​‍‌‍‌‍‌‍⁠⁠‌‍⁠⁠‌‍‌​‌⁠​​‌⁠​‍‌‍⁠⁠‌‍​⁠‌‍‌‌‌⁠​⁠‌⁠​⁠‌‍‍‌‌‍⁠‍‌‍‌⁠​‍​‍​‍⁠​​‍​‍‌‍‍⁠​‍​‍​⁠‍‍​‍​‍‌‍⁠‍‌‍‌‌‌⁠‌⁠‌‌⁠⁠‌⁠‌​‌‍⁠⁠‌⁠​​‌‍‍‌‌‍​⁠​‍​‍​‍⁠​​‍​‍‌‍‍‌‌‍‌​​‍​‍​⁠‍‍​‍​‍‌‍⁠‍‌‍‌‌‌⁠‌⁠​‍​‍​‍⁠​​‍​‍‌‍‌​​‍​‍​⁠‍‍​‍​‍​⁠​‍​⁠​​​⁠​‍​⁠‌‍​⁠​​​⁠​‌​⁠​‌​⁠‍‌​‍​‍​‍⁠​​‍​‍‌‍‍​​‍​‍​⁠‍‍​‍​‍‌‍⁠​​⁠​‌‌‍‍‍‌‌​​‌⁠​‌​⁠‌​​⁠‌‍‌⁠​​‌⁠‍‍‌‌‍‍‌⁠​‌‌⁠‍​‌‍⁠​‌‍​‍​⁠‌​‌⁠‍‍​‍​‍‌⁠⁠‌

We still spec 211x400 in the retort HMI, but I add a little alias so ‘303x406’ maps to 84x111 mm and vice versa — saves misloads when a vendor flips units; CMI (Can Manufacturers Institute) set that 16ths code — do you still get mixed entries on your load calc?

‌⁠‍⁠​‍​‍‌⁠‌​​‍​‍​⁠‍‍​‍​‍‌‍‌‍‌‍⁠⁠‌‍⁠⁠‌‍‌​‌⁠​​‌⁠​‍‌‍⁠⁠‌‍​⁠‌‍‌‌‌⁠​⁠‌⁠​⁠‌‍‍‌‌‍⁠‍‌‍‌⁠​‍​‍​‍⁠​​‍​‍‌‍‍⁠​‍​‍​⁠‍‍​‍​‍‌⁠​‍‌‍‌‌‌⁠​​‌‍⁠​‌⁠‍‌​‍​‍​‍⁠​​‍​‍‌‍‍‌‌‍‌​​‍​‍​⁠‍‍​⁠​‌​⁠‌​​⁠​⁠​‍⁠​​‍​‍‌‍‌​​‍​‍​⁠‍‍​‍​‍​⁠​‍​⁠​​​⁠​‍​⁠‌‍​⁠​​​⁠​‌​⁠​‍​⁠​⁠​‍​‍​‍⁠​​‍​‍‌‍‍​​‍​‍​⁠‍‍​‍​‍‌​⁠‌​⁠​⁠​⁠​​‌​⁠‍‌‌‌‌‌⁠​⁠​⁠‍‌‌‍‍‌​⁠​​‌‍‌​‌‌​‌‌​⁠⁠​⁠​‌​⁠​​‌‍‍‌‌‌​⁠​‍​‍‌⁠⁠‌

I’ll track ‘30 g protein at breakfast’ — shake + yogurt — since it steadies hunger and makes sets feel easier; coffee can’t spot me. If mornings go sideways, I’ll switch to ‘2 veg portions by lunch’ as a backup. First check-in Wednesday at 12 pm.

‌⁠‍⁠​‍​‍‌⁠‌​​‍​‍​⁠‍‍​‍​‍‌‍‌‍‌‍⁠⁠‌‍⁠⁠‌‍‌​‌⁠​​‌⁠​‍‌‍⁠⁠‌‍​⁠‌‍‌‌‌⁠​⁠‌⁠​⁠‌‍‍‌‌‍⁠‍‌‍‌⁠​‍​‍​‍⁠​​‍​‍‌‍‍⁠​‍​‍​⁠‍‍​‍​‍‌⁠​‍‌‍‌‌‌⁠​​‌‍⁠​‌⁠‍‌​‍​‍​‍⁠​​‍​‍‌‍‍‌‌‍‌​​‍​‍​⁠‍‍​⁠​‌​⁠‌​​⁠​⁠​‍⁠​​‍​‍‌‍‌​​‍​‍​⁠‍‍​‍​‍​⁠​‍​⁠​​​⁠​‍​⁠‌‍​⁠​​​⁠​‌​⁠​‍​⁠‌‍​‍​‍​‍⁠​​‍​‍‌‍‍​​‍​‍​⁠‍‍​‍​‍‌​‌‌‌​​‍‌​​‍​⁠‍​​⁠​‌‌‌⁠⁠​⁠‍‌‌‍‍​‌​‍⁠‌‌‌⁠‌‌‌‍‌​⁠⁠‌​⁠⁠‌‍‌‌‌‍‌‍‌‍​⁠​‍​‍‌⁠⁠‌