There shall be a provision, in the case of monthly premium industrial policies, granting, upon proper written request and upon presentation of evidence of insurability satisfactory to the insurer, the privilege of converting a monthly premium industrial insurance policy to any form of ordinary life insurance regularly issued by the insurer, in accordance with terms and conditions agreed upon with the insurer. The privilege of making the conversion need be granted only if the insurer’s monthly premium industrial policies on the life insured, in force as premium paying insurance and on which conversion is requested, grant benefits in event of death, exclusive of additional accidental death benefits and exclusive of any dividend additions, in an amount not less than the minimum amount of ordinary insurance issued by the insurer at the age of the insured on the plan of ordinary insurance desired.