BAIRD &TATLOCK (LONDON) LTD. 



4492 

 4492 Opisometer for marking spaces on a growing plant 



each 10 



4493 



4494 



4493 T Demonstration Auxograph, complete with recording cylinder, revolving once an hour, 

 and is such a size that each millimetre space represents i minute of turning. Complete 

 on stand . . . . . . . . . . . . . . . . . . 5 



4494 T Leaf Cutter or Punch, for punching out sections of leaves exactly i square centimetre in 

 diameter. Price complete with two perforated cups 



4496 s Recording Drum, as above, but to revolve once in either 12 or 24 hours 

 4497 s Recording Drum, as above, but to revolve once in either 3! or 7 days 



4 



2 10 



4495-4497 



4495 s Recording Drum, 6 in. drum, simple form, fitted with clockwork to drive at two speeds 

 respectively, one revolution in half or quarter hour. Mounted on heavy sole for use in 

 vertical position . . . . . . . . . . . . 3 10 



3 10 



3 10 



