CALCULATED INDUSTRIES 6135 Digital Plan Measure 7.30" 91 Scales educational supply

Digital plan measure for construction takeoffs

The Calculated Industries 6135 is a hand-held scale tool built for fast, accurate material takeoffs from blueprints. It stores 91 built-in metric and imperial scales plus eight custom scales. A 7-digit main LCD shows measurements while a 3-digit counter and 5-digit scale display keep reference data visible. Power comes from two included CR-2032 lithium cells.

Estimators and contractors who scale drawings

Professionals who regularly quantify linear dimensions from paper plans will benefit from the dedicated length and width keys, auto-count feature and memory function that create a permanent record of every dimension. Workers who only measure on-site with a tape or who need area and volume calculations directly from the instrument should consider a different tool.

99.8 % mechanical accuracy with 2-4 % user variance

The wheel mechanism delivers 99.8 % mechanical accuracy, though real-world results typically vary by 2-4 % depending on plan quality and tracing technique. This single figure determines whether the instrument meets the tolerance required for a given bid or estimate.