1/5 & 1/10 mechanical in metal case. Push Buton at top works as start & stop switch. Third press of the switch brings the pointer to zero.
Superior, optically true, back nicely silvered with protective coating, any lenght from 15 to 100 cm. DIA A 50 mm Any Focal Lenght B 100 mm Any Focal Lenght
Highly polished and well edged, manufactured from plate glass optically true: Diameter Focal Length (I) (II) (III) A 50MM 5cm 5cm More than 10cm B 100MM 10cm 10cm More than 10cm
Highly polished and well edged, manufactured from plate glass optically true: Diameter Focal Length (I) (II) (III) A 50MM 5cm 5cm More than 10cm B 75MM 10cm 10cm More than 10cm
With metal handle, brass C.P. ring. FL 20 to 100cm Available : 50 / 75 / 100 mm Diameter
Made from superior quality moulded glass with glossy surface. A. 75 X 50 X 12 MM B.75 X 50 X 18 MM C.100 X 60 X 18 MM D.100 X 60 X 25 MM
Quilateral, highly polished surface. Available : 38 mm / 50 ml
5x21/2 inch pasted on wooden stand complete.
All metal fitted on metellic base.
(Bird & Cage app. ) Battery Operated.
Single Aluminium body
A pair of glasses. One plane, other convex 50mm in metal frame with three screws for applying pressure.
Lens Holder
Metal on adjustable stand.
Brass on adjustable metal stand.
Wooden Polished.
Wooden Polished
In metal frame an adjustable stand
Candle Holder
On adjustable metal stand Available : 6 / 9 mm
