1 oz Krugerrand Size Differences

According to :

D: 32.77 T: 2.84 W: 33.930
http://en.wikipedia.org/wiki/Krugerrand

D :32.6 mm T: 2.75 mm W: 33.933 g
https://online.kitco.com/bullion/gold/product_box_gold_krug_1oz.html

Can someone please explain these differences. These could cause a novice to panic thinking they have purchased a fake.

Thank You

Properties
The Krugerrand depicts President Paul Kruger on the obverse with the name of the issuing country in both Afrikaans and English appearing in the legend, while the reverse depicts a springbok antelope with the mint date in the field.The Krugerrand is 32.6 mm in diameter and 2.74 mm thick. The Krugerrand's actual weight is 1.0909 troy ounces (33.93 g). It is minted from gold alloy that is 91.67% pure (22 karats), so the coin contains one troy ounce (31.1035 g) of gold. The remaining 8.33% of the coin's weight (2.826 g) is copper (an alloy known historically as crown gold which has long been used for English gold sovereigns), which gives the Krugerrand a more orange appearance than silver-alloyed gold coins. Copper alloy coins are harder and more durable, so they can resist scratches and dents.

Thats funny but in the properties above the graph its listed as 32.6mm and 2.74mm on Wiki.