I believe that tamper is 50mm
The recommended tamper size for the Gaggia Classic espresso machine is 58mm.
The recommended tamper size for the Gaggia Classic Pro espresso machine is 58mm.
To make a homemade tamper for your espresso machine, you can use a small, flat-bottomed object that fits snugly inside your portafilter. This can be a small jar lid, a metal measuring spoon, or even a wooden dowel that is the right size. Simply press down firmly on the coffee grounds in the portafilter to create a compacted puck before brewing your espresso.
An espresso tamper is used when making espresso coffee. One needs to pack the coffee before brewing, and a tamper is a tool which does so. They are available for sale at many kitchen stores such as Bed Bath and Beyond.
A coffer tamper is used to compress ground coffee in the process of making espresso coffee One can purchase a coffee tamper when one shops online at eBay.
A tamper is used to compact soil. Either a vibrating plate or a jumping jack type machine.
To properly press espresso, use a tamper to evenly compress the coffee grounds in the portafilter. Apply firm and consistent pressure to create a level surface. This helps water flow evenly through the grounds, extracting the flavors and oils for a perfect shot of espresso.
The "tamper" or "packer" as it is sometimes called - comes in several sizes. Measured in mm, corresponding to the filter basket width for proper insertion of the base. 56, 57, 58 mm are the standard sizes. Home espresso machines come with cheap plastic versions of the tamper that is usually - for commercial machines - made with aluminum, or other metals.
The word "tamper" is a verb; a word for to cause damage to or make unauthorized alterations to something; to weaken or change for the worse. The word "tamper" is also a noun; a word for a person who tamps or operates a tamping machine.
Tamper proof means it is not possible to tamper with something. Tamper evident relates to devices that reveal if something was tampered with.
The past tense of tamper is tampered.
Anything which is tamper proof cannot be altered, changed or messed about with.