BAIRD &TATLOCK (LONDON) LTD. 



1662 



1662" Balance, new pattern, for students, 250 grammes capacity, sensitive to 4 milligrammes, 

 steel knife edge in centre of beam, double hooks for suspending stirrups and for specific 

 gravity experiments, pans 10 centimetres diameter, levelling screws and plummet, mounted 

 on polished wood base . . . . . . . . . . . . each 



1663 U Physical Balances, solidly constructed, with steel knife edges on agate planes, 



levelling screws and plummet, beam support and double hooks for suspension, on 

 polished mahogany sole. 



To carry . . . . zoo 250 



Sensitive to . . 2 2 



Diameter of pans . . 8 10 



Price .. .. 1 10 1 17 6 250 



18 6 



500 

 5 



12 



2 5 



1 ,000 grammes. 

 10 milligrammes. 

 15 centimetres. 

 276 



1664 



1664" Balance, well made, to carry 250 grammes, sensitive to i milligramme, with agate knife 

 edges and bearings, improved rest for beam so arranged that the knife edges are not in 

 contact with the planes when balance is at rest, beam divided on one side, pillar fitted 

 with plummet, on polished mahogany sole with levelling screws . . 1140 



1665 1 ' Balance, as above, fitted in polished mahogany case with sliding glass door, so arranged 



that the balance can be lifted out when required (as Fig. 1667) ' . 296 



CROSS STREET HATTCXN GARDEN, E-C 



322 



