Mechanical Polar Planimeter Models  Series 10, 20 and 30

Mechanical planimeters are the most popular types. They are economical and offer good overall accuracy and range for most applications involving medium sized areas. The measuring wheel rides directly on the measuring surface. It is integrated into a measuring mechanism with a dial, drum and vernier readout system with the typical maximum counting capacity of 4 digits (9999)

Lasico’s Model 10,20 and 30 are among the most precise and reliable instruments of this type with the features listed below: All Lasico Planimeters are supplied with a pole weight rather than a needle pole, which easily mutilates a table surface and cannot be used on desks with hard laminated tops. Furthermore, all models are equipped with a vernier magnifier and with a zero set wheel. An adjustable pole arm increases the effective measuring range by some 20%. It is optional with models 10 and 20 and standard with Model 30. Features like a tilted body design and a parallax free tracer lens permit convenient operation without the need to bend over the instrument during tracing and readout. Still available: N-Models equipped with a tracer stylus.

Model 10 and 20 Planimeters are equipped with a fixed tracer arm but with a choice of either a lens tracer (L-Models) or needle tracer (N-Models) While the Model L10 and N 10 is optimized for maximum accuracy, Model L20 and N 20 is configured for maximum measuring range. Models L20M and N 20M feature metric calibration .

Model 30 planimeters are equipped with adjustable pole and tracer arms which enables the user to optimize the instrument for both, maximum precision and measuring range. Model 30 is available with either a lens tracer (L 30) or needle tracer (N 30) and features both English and Metric calibration.

A tilt body design and a parallax free tracer lens permit convenient operation without the need to bend over the instrument during tracing and readout. The L30 Model is also equipped with a rotating cursor to compensate for uneven table surfaces.

The tracer lens is flat to permit parallax and reflex free viewing from convenient seating positions.

An attachable magnifier can be dropped into the cursor recess to enlarge the thickness of the lines being traced.

Still available: Planimeters with tracer needle (N-Models) which may be more suitable for specific applications.

Models	L / N 10	L / N 20	L / N 20M	L / N 30
Max. Resolution	0.01 sq.in	0.02 sq.in	0.1 sq.cm	0.009 sq.in 0.05 sq.cm
Typ. Meas.Range	6 x 13 in	13 x 21 in	24 x 50 cm	12 x 30 in 30 x 76 cm
Inst.Accuracy	+/- 0.2%	+/- 0.25%	+/- 0.2%	+/- 0.2%

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