double spring hinge for timber eyeglass frame TSH-53-A
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TSH-53-A , the updated model of TSH-53 ;
Four differences mainly on the width and length of hinge bottom,incling angle:
1st position: narrow the hinge bottom from 4.8mm to 4.6mm width ;
2nd position: shorten the 13.3mm original length to 12.5mm length;
3rd position: shrink 0.5mm extending out bottom to 0.3mm shrinking in.
4th position: 10 degree to 6 degree for downwards incling angle.
Which have been marked on the drawing of TSH-53-A below. Except them, all other sizes,such as spring hinges,holes distance are all exactly same.
These updates are mainly considering for the customers who make recess on frames temples and sink the hinges a little in,under this circumstances,extending size is not necessary.
These two models are twin models and could be replaced by each other when any one is out of stock in our opinion.
Material: high nickel;
TSH-53 hinge after being installed onto wood sunglasses frame:
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