Bauhaus-Universität Weimar

Jaquet’s low voltage Stop Watch No. 303d 
for Electric remote control and Hand control 
for registration of 1/lm seconds 
Dial division as No. 300d 
This type is also the same in construction and operation as No. 303. 
but permits ' jUll. seconds to be read off. Supplied with wall arm and flange, 
round cast iron foot, or base for sloping mounting. 
Jaquet’s mains voltage Stop Watch No. 304 
for connection to 110 or 220 volt lighting mains 
and hand operation 
for registration of 1 /5 seconds 
Dial division as in No. 300 
A 
Fig. 23 Mains voltage Stop Watch No. 304 
This type only differs from the low voltage Stop Watch No. 303 in 
the magnet E 1 being provided for the higher voltage. The terminals are 
of insulating material. Provision is made for the necessary cooling, so that 
even in long periods of use the watch shows no temperature effects. 
Further, a second magnet E 2 also designed for mains voltage is provided 
with which the hands can be electrically zeroised. If the watch is to be 
controlled by hand the armature of the starting magnet E 1 is depressed 
by raising the lever C whereupon starting and stopping are effected by 
pressure upon the armature of the magnet E 2. 
Jaquet’s mains voltage Stop Watch No. 304c 
A similar type to No. 304 but combined with a Laboratory Stop 
Watch No. 300c. 
for registration of 1/10 seconds 
Dial division as in No. 300c. 
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