I might be a bit audacious thinking I might be able to explain our USA rulers to people but I thought I would try. I have had questions about putting measurements into centimeters. I did do that for a while but I got lazy and stopped, probably lost some followers on that. So, here goes . . .
1/2 inch plus 1/2 inch equal 1 whole inch
Pictured above is a representation of 1 inch that has been divided into 4 equal parts. Each part is a quarter inch or 1/4 inch. There are four 1/4 inches in 1 inch.
1/4 inch plus 1/4 inch equals 1/2 inch
1/4 inch plus 1/4 inch plus 1/4 inch equals 3/4 inches
See picture below showing 3/4 inch
1/4 inch plus 1/4 inch plus 1/4 inch plus 1/4 inch equals 1 inch
Pictured above is a representation of an inch divided into 8 equal parts. Each part is an eighth inch or 1/8 inch. There are eight 1/8 inches in 1 inch.
1/8 inch plus 1/8 inch equals 1/4 inch
1/8 inch plus 1/8 inch plus 1/8 inch equals 3/8 inch
1/8 inch plus 1/8 inch plus 1/8 inch plus 1/8 inch equals 1/2 inch
1/8 inch plus 1/8 inch plus 1/8 inch plus 1/8 inch plus 1/8 inch equals 5/8 inch
1/8 inch plus 1/8 inch plus 1/8 inch plus 1/8 inch plus 1/8 inch plus 1/8 inch equals 3/4 inch
1/8 inch plus 1/8 inch plus 1/8 inch plus 1/8 inch plus 1/8 inch plus 1/8 inch plus 1/8 inch equals 7/8 inch
1/8 inch plus 1/8 inch plus 1/8 inch plus 1/8 inch plus 1/8 inch plus 1/8 inch plus 1/8 inch plus 1/8 inch equals 1 inch
The picture above is a representation of an inch that is divided into 16 equal parts or 1/16 inch. Each part is a sixteenth or 1/16 inch. There are sixteen 1/16 inches in 1 inch.
I could write out all of the addition as I did above but think you might have the idea.
I have the 1/16 inch marks added up on the ruler for you.
Above is a representation of 2 inches.
Let's find 1 and 3/16 inches.
Find 1 inch. Count three 1/16 inch marks.
I have 1 inch marked with an X and I've counted 1,2 and 3 more 1/16 inch marks. The arrow is pointing to 1 and 3/16 inches, total.
Let's do 1 and 3/8 inches.
Find the 1 inch, then count over three 1/8 inch marks.
I have the 1 inch marked with and X and I counted 1,2 and 3 more 1/8 inch marks. The arrow is pointing to 1 and 3/8 inches, total.
O.K. I would do more but Digger is sitting on top of the printer looking out of the window so I can't put anymore examples into the printer to show you.
Let me know if this works for you or if you need more explanation. I would also think a better explanation would be available on Google.
Dasha, let me know if this helps, Kris