[English > French] Can someone please tell if this translation is acceptable?

I am posting a tool photo to a French site to see if they can identify it, and need two sentences checked to see if Google translate did a good job. Here is the first:

What is this brass tool with cords?

Google Translate:"Quel est cet outil en laiton avec des cordes?"

Second sentence:

It is approximately 18 cm. long.   Thank you for taking a look.

Google Translate:"Il mesure environ 18 cm. longue. Merci d'avoir jeté un coup d'œil."