LINK HLM-150

Sustained Verification Sessions

Where a run of finished work needs checking in sequence, the internal reading arrangement shows its value. Each measurement is a single continuous observation rather than a cycle of sighting, looking away to read a scale and returning to the eyepiece. Over a tray of lenses those interruptions accumulate into real time, and more importantly into the small lapses of attention where a figure gets attributed to the wrong lens or written down transposed.

Prism Measurement in Binocular Vision Work

Direct prismatic measurement to 5 prism dioptres, extending to 20 with the compensation device, covers the prescriptions encountered when managing binocular vision anomalies. Single dioptre graduations across the whole range, with base angle read over the full 0 to 180 degrees, mean both magnitude and orientation are recorded properly rather than approximated from an instrument working at the edge of its capability.

Teaching Optical Measurement

For training, an instrument where the student aligns the target and reads a graduated scale makes the measurement itself visible. Sphere, cylinder, axis and prism become quantities observed rather than numbers delivered. The adjustable eyepiece lets a succession of students with differing eyesight each work comfortably at the same instrument, which is precisely what a teaching setting requires of shared equipment.

Portable and Second-Position Use

Four kilograms and a compact footprint make the instrument practical to move. Practices running more than one site, holding domiciliary sessions, or simply wanting verification capability at a second position can do so without dedicating permanent bench space. The instrument sets up wherever it is needed and packs away again when the session finishes.

Attention Stays in One Place

The internal reading arrangement removes the gaze shift between target and scale that otherwise punctuates every measurement. This sounds minor and is not: each interruption is a moment where alignment can drift, where the operator can lose track of which lens is being measured, and where a figure can be misread on the way to being written down. Keeping the whole operation within one field of view closes off that category of error. Removing an opportunity for error is worth more than working faster.

Substantial Prism Within Reach

Twenty prism dioptres with the compensation device fitted, graduated in single dioptres and with base angle across the full circle, brings binocular vision work into an instrument of modest size and cost. Practices that would otherwise treat high prism prescriptions as cases requiring outside help can measure them in-house, which changes what the practice can offer rather than merely how quickly it works.

Simple, Portable and Durable

An instrument built from optics and graduated scales has little that can drift out of calibration or fail electronically, and nothing that needs configuring before a reading can be trusted. At 4kg it travels easily. For practices that want capability which stays reliable across many years and can be picked up and taken where the work is, that combination is difficult to better.

Scale Presented Within the Field

Internal reading places the measuring scale inside the observation field. The value is read from the same view that carries the target, so attention stays in one place for the whole measurement.

Range to Twenty-Five Dioptres

Measurement spans zero to plus or minus 25D, with a minimum internal reading of 0.125D. Stronger prescriptions well outside routine dispensing remain within the instrument's compass.

Graduation Matched to Prescription Distribution

Inner reading is graduated at 0.125D from zero to 5D and at 0.25D from 5D to 25D. Resolution is finest across the range where the large majority of prescriptions actually sit.

Prism Compensation Device

Prismatic power reads from zero to 5 prism dioptres directly. With the compensation device fitted the range reaches 20 prism dioptres, in 1 dioptre graduations throughout.

Full Circle Axis and Base Angle

Cylinder axis and prismatic base angle are each read across 0 to 180 degrees, so orientation is recorded as precisely as power on both the cylindrical and prismatic components.

Wide Field of Vision

A wide observation field makes the target easier to judge, which reduces the effort of sustained work and helps when an operator is checking a run of lenses in sequence.

Eyepiece Adjustment Across Ten Dioptres

The eyepiece adjusts plus or minus 5D. Each operator sets focus to their own eye, which matters wherever an instrument passes between several people during a working day.

Compact Bench Footprint

At 275mm by 120mm by 430mm and 4kg, the instrument occupies little bench space and can be moved without difficulty when a different room or site needs it.

The LINK HLM-150 internal reading focimeter keeps the whole measurement in a single view. The scale is presented within the observation field alongside the target, so the operator aligns and reads without looking away, which makes each measurement one continuous action. The range covers zero to plus or minus 25D with a minimum internal reading of 0.125D, graduated at 0.125D up to 5D and 0.25D from there to 25D, and cylinder axis is read across the full 0 to 180 degrees.

Prismatic power reads from zero to 5 prism dioptres directly and to 20 with the compensation device fitted, in single dioptre graduations, with base angle across the full range. The eyepiece adjusts plus or minus 5D for each operator, a wide field of vision assists observation, and objective lens diameter from 16mm to 86mm accepts small and large lenses. At 275mm by 120mm by 430mm and 4kg it suits verification work, prism measurement, teaching and portable use alike. Supply arrangements, bulb specification, certification status, condition, available variants and reseller and listing rights for the manufacturer trademark all warrant confirming rather than assuming. Talk to Medigear.uk, a verified medical equipment supplier, and we will establish exactly what a given instrument provides.