Wing nut

Round nut

Slotted nut

Domed cap nut

For scribing arcs and circles

For marking lines parallel to inside and outside edges

For measuring the internal dimensions

For measuring the external dimensions

To measure external measurement

To transfer measurement from steel rule

To measure internal measurement

To mark lines

22 Degree

32 Degree

34.5 Degree

39.5 Degree

To locate the divider point and scribe circles

To punch witness marks

To punch centre marks

To align the drilled holes