Rails with metric scale on two sides

Few new addition to 5/8 thick rails. Short 5/8 thick rails were requested once in a while.
Lengths 6 and 8 inch with one or two slots. Each rail is also equipped with two rows of M3 taped holes.
You can mount screw type index stop bar using thous holes and possible double side dovetail .
I did make section of rail little different than usually and was able to engrave scale on each side of rail. Future preferred if rail is used as nodal slide. Rail is also equipped with front mounting hole (1/4-20 ) and dowel pin hole. This let you mount clamp on rail end. Very nice option when rail is used with lens bracket as lens support package .

Screws

Once a while I receive  questions about adding extra screw to the order or if screw  they can be purchased separately. Everything is fine until we start to discus head type and screw length.  Industry do not fallow  one standard and this confuse few people.

There is 3 common type screws .

 Socket head cap screw. Screw dimension (length) is measured under head. In sample above this is 1/4-20 SHCS 5/8 length 

 Flat head screw. Length size is specify  as full screw length . Screw above is 1/4 -20 tread and  3/4 length.

Button head socket screw. Screw size is measure again as distance under head. Sample above 1/4-20 and 5/8 length 

Modular Lens support in action

David Jang send me few pictures with new modular lens support attached to his 500mm/F4.00 canon lens .
He used 1.00 inch clamp and 2 inch lens support bracket.

 This combination let him revers lens hood for storage after removing supporting bracket.  Clamp stay mounted to 8 inch rail all the time

Update to G103 connector Block

Nothing major. Just additional material has been removed  from block to keep weight to minimum