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Astronomy explained upon Sir Isaac Newton's principles, and made easy to those who have not studied mathematics. To which are added, a plain method of finding the distances of all the planets from the sun, by the transit of venus over the sun's disc, in the year 1761 ... / by James Ferguson
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A Table for reducing Troy weight into Avoirdupoise weight.

Troy Weight reduced into Avoirdupoise*

IOI

Troy Weight.

Avoirdupoise.

Troy weight.

Avoir.

lb. oz. drams.

Drams.

Pounds4000

3291 6 13.68

Penny wt. 19

16.67

3000

2528 9 2.26

18

15-79

2000

1645 11 6.84

17

14.92

1000

822 13 11.42

16

14.04

900

740 9 2.28

15

13.16

800

658 4 9.14

14

12.29

700

576 0 0.00

13

11.41

600

493 11 6.85

12

10-53

500

411 6 13.71

11

9-65

400

329 2 4-57

10

8.78

300

246 13 1,1.42

9

7.90

200

164 9 2.28

8

7.02

100

82 4 9.15

7

6.14

90

74 0. 13.62

6

5-27

8p

65 13 4.11

5

4-39

70

57 9 9'6o

4

351

60

49 5 < LZ.08

3

2.63

§0

41 2 4.57

2

i-75

4°

32 14 10.05

1

0.88

3°

24 10, 15.54

Grains 23

84

20

16 7 5.03

22

.80

10

8 3 10.52

21

-77

9

7 6. 7.86

20

73

8

6 9 5.21

19

.69

7

5 12 2.56

18

.66

6

4 14 15-90

17

.62

5

4 1 13-25

l6

-58

4

3 4 10.60

15

55-

3

2 7 . 7-95

14

.51

2

1 10 5-3°

r 13

-47

1

0 13 2.65

12

.44

Ounces 11

12; 1.09

II

.40

10

IO 15.54

IO

-3 6

9

9 13.99

9

33

8

8, 12.43

8

.29

7

7 10.88

7

.26

6

6 9.32

6

.22

5

5 7-77

5

.18

4

4 6.22

4

15

3 466

3

.ii

2

2 3.11

2

.07

1

1 1-55

1

.04

A Table,