I/O THE HISTORY \- N ~I> DEVELOPMENT OF THE MlCKi >S('< >PE 



rather supplant.- tin- u>ual milled head ordinarily placed at the top of 

 II ( li'. 1'JH). One consequence of this is that the speed of the fine 

 adju.st meiit is slowed down so much that while Zeiss stands of the 





lever fine ndjust ..... nt (1889). 



onlj ,,',,11, inch fora revolution of tin- milled head 



meter head. thi> form of line adjustment gives 



oluticm ofthesmall mille.l heads \VW fis. 128, 



