Marlco Thread Measuring Parallels Unified /US National

Details:

The thread measuring parallels represent what is probably the simplest and most flexible method of checking the effective diameter of external screw threads. They are manufactured to the highest degree of accuracy and to a specification certified by the National Physical Laboratory. Each pair covers a range of piches irrespective of diameter or direction of thread. Thread Measuring Parallels are supplied as sets or individual pairs complete with plastic clips.

Part No

WDS6603

Range

4-44 T.P.I.

4-7 T.P.I.

8-12 T.P.I.

13-18 T.P.I.

20-28 T.P.I.

32-44 T.P.I.

Contents

5 pairs of parallels

1 pair of parallels