Refractive Index of Water Apparatus

Description

In metal frame and handle, chrome plated

Focal length	Magnification	Add To Enquiry
40 mm	100 mm	x 3.5
50 mm	120 mm	x 3
50 mm	150 mm	x 2.5
60 mm	150 mm	x 2.5
75 mm	150 mm	x 2.5
75 mm	200 mm	x 2.25
100 mm	150 mm	x 2.5
100 mm	250 mm	x 2.25

Description

Brass dial head 40 mm diameter, divided and marked in 100 divisions, vertical scale 10-0-10 mm, fitted on tripod stand, distance between legs 40 mm.

Sizrs are mentioned below:-
Screw pitch 1 mm Screw pitch 0.5 mm

Description

Wooden, with V shaped slot to take spherical lens or mirror up to 75 mm diameter, with index mark.
Lense holder, Wooden, 'V' Shaped.

Description

Optically worked, back silvered, with protective coating.

Focal length	Add To Enquiry
50 mm	75 mm
50 mm	100 mm
50 mm	150 mm
50 mm	200 mm
50 mm	300 mm
60 mm	100 mm
60 mm	150 mm
60 mm	200 mm
60 mm	300 mm
75 mm	100 mm
75 mm	150 mm
75 mm	200 mm
75 mm	300 mm