Laboratory Mechanical Balances: Beam, Dial & Suspension
Confirm the Balance is Genuinely Mechanical
Mechanical balances measure mass through beams, poises and dials rather than electronic load cells. They need no power and no electronic calibration, but readings still depend on level installation, clean knife edges and correct use.
Check the operating principle on each product listing before ordering: this equipment group also contains electronic balances alongside true mechanical designs. The examples below are mechanical instruments verified on their listings.
Compare Beam and Dial Designs
The Ohaus 720-00 Triple Beam Balance lists 610g capacity and 0.1g readability; several related configurations exist, including the Triple Beam Pro with rod and clamp at 2610g. Match the beam configuration to the sample sizes you weigh.
The Ohaus 310-00 Dial-O-Gram Balance lists 310g capacity and 0.01g readability, with magnetic damping, agate bearings and a stainless-steel pan with pouring spouts. The related 1610-00 Triple Beam Dial-O-Gram combines beam weighing with dial readout. Verify each model's construction rather than assuming shared components.
Choose the Right Configuration for the Task
For suspended loads, the Suspension Scale at 110lb by 0.1lb serves a different purpose from bench-top beam balances. Confirm the hanging arrangement, attachment hardware and working clearance before ordering.
Where the procedure requires weighing below the pan or density determination, check that the selected model supports it—the Dial-O-Gram listing describes an adjustable platform arrangement for specific-gravity work. Do not extend that capability to other models without confirmation.
Set Up and Verify Correctly
Install on a stable, level surface free of vibration and drafts. Zero the balance before each session and follow the manufacturer's instructions for beam release, damping and poise positioning. Handle weights and beams carefully to protect knife edges and bearings.
Verify performance with suitable calibration masses where your quality system requires checks; mechanical balances still need documented verification even though they lack electronic calibration menus. Record results according to your procedure.
Keep Mechanical and Electronic Roles Distinct
Choose mechanical balances where power-free, durable weighing with visible beam operation suits the task—teaching laboratories, field kits and rugged duty. For finer resolution, data output or automatic functions, compare electronic options in the main balances and scales range and the portable balances category.
Before completing an order, confirm capacity, readability and included accessories on the exact listing. Accessories shown beside a balance are not automatically included; check whether attachments, cases or calibration masses must be ordered separately.
