238 



Balances and Sets of Weights. 





51 586. 1 : 10. 



51 588. 1 : 



k- Jf cm: 



51 589. 1 : 8. 



Hydrostatic Balance, Figure 51,582. s. d. 



List No. 51,581 51,588 51,583 



To carry 1 2 5 kg 



Sensitivity 10 20 50 mg 



Price 3. 10. 4. 0. 5. 0. 



Gunmetal Beam working on brass pillar, with beam arrestment, on mahogany board with two 

 long and one short brass pans and adjustable plate stand. Axes working on stones. 



Hydrostatic Balance, sufficient where demands are not great, Fig. 51,586. 



List No. 51,584 51,585 51,586 51,587 

 To carry 100 250 500 1000 grams 



Price 0. 13. 6 0. 14. 6 0. 17. 1. 0. 



51.588. Hydrostatic Balance, to carry 250 grams, Figure, with beam adjustable in an 

 up-and-down direction, 2 pans with long stirrup and 1 pan with short stirrup, brass 

 body, jar and plummet (for explaining the Archimedian principle) and with set of 

 weights from 1 mg to 200 grams. The balance indicates 5 mg ! 1. 10. 



51.589. - - idem, without above-named accessories, Figure, with 3 pans 1. 0. 



: l .590. Demonstration and Hydrostatic Balance, Figure, with 2 weights of 200 g and 



1 weight of 100 g, also 2 long and 2 short pans 6. 10. 



The balance is 60 cm high, fitted with rigid pillar and is very sensitive for its size, The de- 

 flections are large and can be read from a distance. 



The balance permits of explaining: distribution of the lever shifting of centre of gravity - 

 im-rea.se and decrease of sensitivity on lengthening and shortening the lever results of placing the 

 suspension axes above or below the central axis testing the balance for proportionality adjustim: 

 the inequality of arms correct weighing with an unequal arm balance determining the error of 

 the lever use of balance for determining the specific gravity of solids and liquids. 



The balance can in addition be used as a tare balance for loads to 1 kg. 



51.591. 1 Case iii which to lay and despatch the balance No. 51,590 1. 5. 



.M.592. Arrangement for Hydrostatic Tests, Figure, for raising and lowering the glass 



i li;mir;ill\ 1. (I. (I 



:.l.. "!i.'>. Large Demonstration and Hydrostatic Balance, Figure 



The balance in l.Kl in high ami lias a sensitivity of 10 mg on each side \\ith its maximum load 

 nf ."> kg. thus rendering it suitable for use a.s an ordinary balance. 



The balance lias excentric arrestment. rider scale and two pairs of pans of different sizes; as 

 the suspenders are exactly equal the smaller pans can be suspended instead nf (he larger. 



10. 0. 



ci. 



i. 3793. 



