I could use some help understanding how to measure and describe the size of a garden faucet.

I need to replace a garden faucet fixture (for the sorry details, see How to repair this leaking garden faucet).

I measured the two openings but the measurements do not agree with the stamp on the side. The stamp says 1/2. The inner diameter of the two openings are 3/4 and 5/8. (See photos.)

What size fixture should I buy to replace the broken one?

Thank you.
[![1/2 stamped on side][1]][1] [![3/4 ID][2]][2] [![5/8 ID][3]][3]

I could use some help understanding how to measure and describe the size of a garden faucet.

I need to replace a garden faucet fixture (for the sorry details, see How to repair this leaking garden faucet).

I measured the two openings but the measurements do not agree with the stamp on the side. The stamp says 1/2. The inner diameter of the two openings are 3/4 and 5/8. (See photos.)

What size fixture should I buy to replace the broken one?

(I am not going out to shop due to the pandemic. I seek enough information to order a replacement online.)

Thank you.
[![1/2 stamped on side][1]][1] [![3/4 ID][2]][2] [![5/8 ID][3]][3]