Unused roll of printer graph paper for microdensitometer

Unused roll of printer graph paper in sealed plastic bag for microdensitometer used to measure the X-ray density of tree rings in research into past climates, 1978

Details

Category:
Meteorology
Object Number:
1998-205 Pt20
Materials:
paper (fibre product) and plastic (unidentified)
Measurements:
overall: 12.2047 x 1.9685 x 1.9685 in.; 31 x 5 x 5 cm
type:
instrument component and densitometer
credit:
Donated by Swiss Federal Institute for Forest, Snow and Landscape Research