HEME digital autorange ac/dc clamp-on ammeter model HEME 1000/A, using the Hall effect for non-contact measurement of electrical current. HEME digital autorange ac/dc clamp-on ammeter model HEME 1000/A HEME digital autorange ac/dc clamp-on ammeter model HEME 1000/A, using the Hall effect for non-contact measurement of electrical current. Object Number: 1997-1839 Pt1 type: clamp-on meter
Connecting lead for HEME digital autorange ac/dc clamp-on ammeter model HEME 1000/A. Connecting lead for HEME digital autorange ac/dc clamp-on ammeter model HEME 1000/A Connecting lead for HEME digital autorange ac/dc clamp-on ammeter model HEME 1000/A. Object Number: 1997-1839 Pt2 type: probes
Leather case for HEME digital autorange ac/dc clamp-on ammeter model HEME 1000/A. Leather case for HEME digital autorange ac/dc clamp-on ammeter model HEME 1000/A Leather case for HEME digital autorange ac/dc clamp-on ammeter model HEME 1000/A. Object Number: 1997-1839 Pt3 type: case
Gramme ring electric motor, used at Rowntrees, York, to drive a fan.1/2H.P, 230 Volts D.C, and probably made in 1985. Has a long driving shaft, fits through bridge support for the two circular magnet coils. Gramme ring armmature beyond, with contacts at far end. fitted with carbon brushes. Grease lubrication by screwdown caps. Painted black. Manufacturer unknown gramme ring motor
Crookes' tube by which an image of the cathode is produced on the glass Crookes' tube by which an image of the cathode is produced on the glass