Kromdraai Gold Mine General artefacts in the museum (Image: Gauteng Tourism Authority) Gold is central to the history of Gauteng and it was only as recently as 1886 that the city of Johannesburg was founded, mainly due to the vast amounts of gold to be found in the area.
3000 yards on each spool of dark pink thread. Ideal for light to medium weight structured fabrics. â¢ Shrink and abrasion resistant.
In a threaded part, several features are involved â the threadâs major diameter, minor diameter, pitch diameter, pitch (in case of metric threads) or threads per Inch (TPI in case of Standard American Equivalent (SAE) threads), flank angle, etc. Normally, a GO / NO-GO type of threaded gauge will inspect a threaded part based mainly on the pitch diameter.