Casement window parts

Can you identify the parts without me removing the items?
Needed are: 1)the crank/closing mechanism and 2) one of the slide holdbacks for
the locking mechanism.
The only markings I see says 'Truth'
I tried to identify the parts on the website but was unable because none of the closer arms seemed to match what the existing one looked like.
Attached: (3) photos of the closer and (1) photo of the slider holdback.
Thank you very much