المنظار جديد.

Yes. In Modern Standard Arabic, this is a complete nominal sentence.

It has:

• المنظار = the subject/topic
• جديد = the predicate/description

So the sentence structure is essentially:

• the binoculars / the telescope / the scope
  • new

In Arabic, that is enough to make a full present-tense sentence.

Because Arabic normally does not use a present-tense verb meaning is/are/am in sentences like this.

So:

• المنظار جديد = The … is new

There is no separate word for is in the present tense.

But in other tenses, Arabic does use a verb such as كان for was:

• كان المنظار جديدًا = The … was new

In Arabic, descriptive words usually come after the noun they relate to.

So Arabic says:

• المنظار الجديد literally the scope the-new
• not the new scope

In your sentence, جديد is functioning as the predicate of the sentence, and Arabic normally puts the subject first and the description after it:

• المنظار جديد = The … is new

So the order is normal Arabic word order.

Because here جديد is not part of the noun phrase the new …. It is the predicate of the sentence.

Compare:

• المنظار جديد = The … is new
• المنظار الجديد = the new …

This is a very important difference in Arabic:

• predicate adjective: usually indefinite
  
  • المنظار جديد
• attributive adjective (inside a noun phrase): matches the noun in definiteness
  
  • المنظار الجديد

So جديد does not take الـ here because it means is new, not the new.

المنظار الجديد means the new …, not The … is new.

So:

• المنظار جديد = The … is new
• المنظار الجديد = the new …

The second one is a noun phrase, not a full statement by itself in the same way. It usually needs more context, for example:

• المنظار الجديد على الطاولة = The new … is on the table

Because المنظار is a masculine singular noun, so the describing word uses the masculine singular form too.

• masculine singular: جديد
• feminine singular: جديدة

So Arabic agreement gives:

• المنظار جديد
• not المنظار جديدة

If the noun were feminine, then you would use جديدة.

Yes. In fully vocalized Classical/MSA style, this would normally be:

• الْمِنْظَارُ جَدِيدٌ

Both words are in the nominative:

• المنظارُ = subject of a nominal sentence
• جديدٌ = predicate of a nominal sentence

In normal everyday Arabic writing, these short vowel endings are usually left unwritten, so you often just see:

• المنظار جديد

That is completely normal.

A rough pronunciation is:

• al-min-ZAAR

And the whole sentence is roughly:

• al-min-ZAAR ja-DEED

A few pronunciation notes:

• الـ is pronounced al- here
• م is a moon letter, so the l in الـ is pronounced clearly
• ظ is an emphatic consonant, somewhat like a heavy z or dh sound depending on a speaker’s pronunciation
• جديد is pronounced roughly ja-deed

For a basic sentence meaning The … is new, the normal order is:

• المنظار جديد

Saying جديد المنظار would not be the standard beginner pattern for that meaning. It can sound incomplete or like a different structure, depending on context.

So for a simple neutral statement, stick with:

• المنظار جديد

That is the standard and safest form to use.