Signedon front under lens: Construit Par Les Etablissements André Debrie Paris M 03310 / MADE IN FRANCE
on front: Societe Francaise SEPT Paris
on lens: H. Roussel 1:35, F50, Paris 40069 Stylor
FunctionModified by Professor R.V. Pound to record data from redshift experiments.
Historical AttributesUsed by Prof. R.V. Pound for redshift experiments and donated by him on 11/9/95.