The Radial Square Root Planimeter is used for evaluation of flowmeter and temperature charts.
It serve to determine the mean height of curves in circular charts recorded proportionally to the exponent of the desired quantity (non linear height divisions). The guide cam be designed individuelly to obey any arbitrary recording law, for quadratic or almost linear or linear divided charts.
Therefore a sample chart in original always be attached to your inquiry or order.

Digital Radial Square Root Planimeter HAFF No. 336E
Chart size: Min. diameter of base circle: 22 mm
Max. diameter of outer circle: 330 mm
Digital Readout
Electronic zero setting
Electronic calibration
Accuracy better than 0,2 mm of a chart with a height of 100 mm
Data output (interface HAFF-No. 304 necessary)
Power supply: rechargeable battery given 30 hours continuous use, 15 hours recharging time
Total weight: 1.25 kg

Turntable (board) 400 x 300 x 10 mm  HAFF No. 336-99
Test rule for 336E  HAFF No. 336L
Radial Square Root Planimeter with vernier reading  HAFF No. 312E