Leclanche Cell :  Charged porous pot "Eagle". With brass terminals having e.m.f. exactly 1.5 volts, complete with thick zink rod and plastic jar.

Magnetic Compass :  18mm dia, both sides glass, in AI. body  

Meter Bridge (Wheatstone or Carry Fosters Bridge) :  One meter long wooden base  fitted with graduated scale, brass C.P. connecting strips and terminals, 2 gaps or 4 gaps with with pencil type sliding jockey.
a) With full sunmica sheet on base    
b) With Leminated Plywood base (Superior quality)  
c) Extra charges for spring type sliding jockey instead of pencil type jockey instead of Pencil type jockey 

Micrometer Screw Gauage :  With ratchet stop, dull C.P. gun metal body and nicely threaded oxidised or C.P. rod. English Pattern, most accurate
Size  :  10 mm  15mm  20mm  25mm
Pitch :  1mm
Pitch :  1/2mm 

Mirror :  College grade (concave or convex) highly silvered, optically true with beautiful ring on its outer surface, special quality, F.L.10, 20, 25cm
Diameter :
a) 50mm
b) 75mm  

Pendulaum Bobs :  Set of six different metals OR Brass Size dia: 1", 1/2", 1/3"  

Physical Balance : Varanasi type, with 7 stone atates, fitted in nicely polished teak wood case with sunmica base and divided doors, Capacity 250 gm, sensitivity 1 mg.  

Physical weight Box : Brass C.P. weights, in nicely polished seasoned wooden box, tested accurate.
1 mg to 100gm, 200gm, 500gm, 1000gm, 50gm 

Plug Key :  Made from 10.5 mm thick brass blocks fitted on bakelite base with brass nuts and screws, superior.
1 way 
2 way 
3 way