No it is not safe
6
78 sixteenths
It is 7.44 eights of an inch.
Find the part of the ruler where the inch is divided into eight parts. Then count along seven. Seven eights is almost a whole inch. It is half a quarter MORE than three quarters.
1
8*7/10 = 56/10 = 5.6 eighths
8
1
1.125
7/8 = 0.875 of an inch
MY 2000 dodge ram 5.9 has 1-inch and five eigths and 1 that is an inch and 1 that is an inch and seven eights. these are the three in the back of the engine .
5/8 inch is 15.875mm