— 
Watchmakers’ eyeglass. se ids 
No. 4564 in vulcanite mount... a 6 
No. 45644 in aluminium mount ve EE) 
Engravers’ glass. 
No. 3705. In vulcanite mount, lens ldin. dia. 6 O 
No. 3706. 5 - Seats (oi 0) 
Entomological magnifier. 
This consists of a magnifier (x12) which 
together with a handle, by which the instru- ee 
ment is held, is hinged upon a slotted bar. "5 
< 5 f cae Diyp} ry 
In this slot is placed a fitting having at one oa a aaa 
end a forceps for holding an object andat the /(aam 
other end aspike upon which suitable objects 
can be impaled. A cork upon which ento- 
mological objects are pinned can be mounted 
on this spike. The forceps slides along the bar 
for focussing and can also be raised or 
lowered, and rotated. The whole appliance 
folds into a case 33 x 2}"x £" in the achro- 
matic type and 34" x 13" x #" in the single lens 
type. 
No. 3702. Entomological magnifier with achromatic lens oe fal lee 0 
single lens... ee cies Ga ye) 
Luvex illuminating magnifier. 
The Luvex magnifier consists of a lens surrounded by a 
mirror which concentrates a reflected light on the object under 
examination. The brilliant illumination thus produded greatly 
facilitates examination. It is particularly suited for use with 
objects having cavities as a direct beam of light can be directed 
into the cavity and a clear view obtained. 
No. 3145. x5 in vulcanite mount ... a ee) Sten O 
No: SI4AG3 eS oLOs =. ae ce a an in 6 
oO 
Or 
No. 3145. 
Focostat magnifier. 
This lens fits the bandle of a dissecting instru- 
ment, mapping pen, pencil, or needle, and 
magnifies the point of the instrument together 
with the object being dissected or the drawing 
being made. 
No. 3378. Focostat lens complete with 
dissecting needle... 50 6) VO 
No. 3378a. Ditto with mapping pen,,, 0 10 6 
No. 33788. Ditto with two scalpels ... 0 16 6 No. 3378. 
{11 
