a grain of sugar is about 1 mm. so take three of those and you'll have about 3 mm 3mm is about1/8"
The answer will depend on the units. 20 mm x 8 mm is quite a different size from 20 miles x 8 miles.
The object would be 8 mm in size. This is calculated by taking 25% of the diameter of the field of view (32 mm) which is 8 mm.
The top are 8 mm and the bottom are 10 mm Remember, that is wrench size.
he's show size is 8
First off, there are two "types" of needle sizing. The first is the US method of measuring needles, and the second is the UK/Canada method of measuring. Therefore, there are two answers to your question. For US knitting needles, there are sizes: 0 (2.0 mm) 1 (2.25 mm) 2 (2.75 mm) 3 (3.25 mm) 4 (3.5 mm) 5 (3.75 mm) 6 (4.0 mm) 7 (4.5 mm) 8 (5.0 mm) 9 (5.5 mm) 10 (6.0 mm) 10 1/2 (6.5 mm) 11 (8.0 mm) 13 (9.0 mm) 15 (10.0 mm) 17 (12.0 mm) 19 (16.0 mm) 35 (19.0 mm) 50 (25.0 mm) For UK/Canada sizes, there are: 14 (2.0 mm) 13 (2.25 mm) 12 (2.75 mm) 11 (3.0 mm) 10 (3.25 mm) 9 (3.75 mm) 8 (4.0 mm) 7 (4.5 mm) 6 (5.0 mm) 5 (5.5 mm) 4 (6.0 mm) 3 (6.5 mm) 2 (7.0 mm) 1 (7.5 mm) 0 (8.0 mm) 00 (9.0 mm) 000 (10.0 mm)
21 mm
0.8 cm IS a description of size it is equal to 8 mm.
A 5.0mm would be an H-8 hook.
It is in between a 9/16 inch and a 5/8 inch.
22 mm or 7/8" will work
22 millimeters is 0.87 inch.